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1.63 Carat Australian Boulder Opal 18k Gold Ring
Located in MAIN BEACH, QLD
Glitter pattern is very rare in boulder opal as is a strong green crystal base but this gem opal
Category

2010s Australian Solitaire Rings

Materials

Opal, 18k Gold

Top Quality Boulder Opal and Diamond Yellow Gold Cuff
Located in Barcelona, ES
This cuff is handmade in 18k yellow gold , a top quality Australian boulder opal, and 8 round
Category

2010s Contemporary Cuff Bracelets

Materials

White Diamond, Opal, 18k Gold

Australian 0.94ct Boulder Opal, Diamond 18K Gold Necklace
Located in MAIN BEACH, QLD
Opal Type: Boulder Opal Opal Weight: 0.94ct Opal Origin: Winton, QLD, Australia Diamonds: 0.09ct D IF
Category

21st Century and Contemporary Australian Pendant Necklaces

Materials

Diamond, Opal, 18k Gold

Australian 61.79 Crat Boulder Opal 18k Gold Necklace
Located in MAIN BEACH, QLD
With the colours of a tropical sea, this breathtaking opal is an Australian boulder opal from
Category

2010s Australian Pendant Necklaces

Materials

Opal, 18k Gold

18K White Yellow Gold Hand-Carved Boulder Opal Diamond Pendant
Located in Waterloo, New South Wales
This one of a kind pendant is from Lingjun's earlier creation, featuring a hand-carved boulder opal
Category

21st Century and Contemporary Australian Contemporary Pendant Necklaces

Materials

Diamond, Opal, 18k Gold, White Gold, Yellow Gold

Australian 10.38ct Boulder Opal, Diamond 18K Gold Ring
Located in MAIN BEACH, QLD
This amazing boulder opal is the best gem opal we have ever had in a ring. It has outstanding
Category

Late 20th Century Australian Cocktail Rings

Materials

Diamond, Opal, 18k Gold

Made to Order, 18K Gold Boulder Opal Diamond Ring
Located in Waterloo, New South Wales
This one of a kind ring is from Lingjun's earlier collection, featuring a solid boulder opal from
Category

21st Century and Contemporary Australian Contemporary Cocktail Rings

Materials

Diamond, Opal, 18k Gold, White Gold, Yellow Gold, Platinum

Giulians 18k Australian Boulder Opal and Diamond Brooch
By Giulians
Located in Sydney, NSW
Giulians contemporary handcrafted 18 karat 56.44ct Australian Boulder opal and diamond brooch. The
Category

2010s Australian Contemporary Brooches

Materials

White Diamond, Opal, 18k Gold

18 Karat Rose Gold Boulder Opal Drop Earrings Diamonds
Located in Milan, IT
18 K Rose Gold Australian Boulder Opal (carats 90) Drop Earrings Diamonds (carat 0,14) These
Category

21st Century and Contemporary Italian Contemporary Drop Earrings

Materials

Opal, 18k Gold

Australian Boulder Opal, Pink Diamond, 18K Gold Platinum Necklace
Located in MAIN BEACH, QLD
. With its truly amazing Black Boulder Opal of over 50ct from the Queensland outback, to its Pink and
Category

21st Century and Contemporary Australian Pendant Necklaces

Materials

Pink Diamond, Opal, 18k Gold, Platinum

Australian 12.94ct Black Boulder Opal, Diamond, 18K Gold Platinum Ring
Located in MAIN BEACH, QLD
Dazzling blues and greens - there is no hiding the high quality of this stunning ring. Boulder opal
Category

Late 20th Century Australian Art Deco Cocktail Rings

Materials

Diamond, Opal, Black Opal, 18k Gold, Platinum

Australian 22.8ct Boulder Opal, Diamond 18K Gold Necklace
Located in MAIN BEACH, QLD
boulder opal has vibrant reds, blues, purples and a vivid green stripe running down its length. A very
Category

Late 20th Century Australian Pendant Necklaces

Materials

Diamond, Opal, 18k Gold

18 Karat Gold, Diamond and 7.1 Carat Boulder Opal Ring
By Nancy Phillips
Located in Eugene, OR
Boulder Opals from Australia are simply amazing. Not used often because they are hard to work with
Category

2010s Thai Modern More Rings

Materials

Diamond, Opal, 18k Gold

Monseo Boulder Opal, Rubies and diamonds Gold Long Necklace
By Monseo
Located in Porto, PT
Crafted in white 19.2K gold with a Boulder Opal in a large pendant set with rubies and diamonds
Category

2010s Portuguese Modern Chain Necklaces

Materials

Diamond, White Diamond, Opal, Freshwater Pearl, Ruby, 18k Gold, Rhodium

4.82 Carat Australian Boulder Opal 18K Gold Necklace
Located in MAIN BEACH, QLD
SPECIFICATIONS Opal Type: Boulder Opal Opal Weight: 4.82ct Opal Origin: Winton, QLD, Australia
Category

21st Century and Contemporary Australian Pendant Necklaces

Materials

Opal, 18k Gold

4.07 Carat Australian Boulder Opal 18K Gold Necklace
Located in MAIN BEACH, QLD
SPECIFICATIONS Opal Type: Boulder Opal Opal Weight: 4.07ct Opal Origin: Winton, QLD, Australia
Category

21st Century and Contemporary Australian Pendant Necklaces

Materials

Opal, 18k Gold

Blackened Silver Pendant with Boulder Opal, Garnet and Sapphire
By Kary Adam
Located in Seattle, WA
A Blackened Silver Pendant with Boulder Opal, Tsavorite Garnet, Sapphire & Rhodolite Garnet on a
Category

2010s Thai Contemporary Pendant Necklaces

Materials

Garnet, Opal, Sapphire, Silver

Boulder Opal Ring with Diamond Baguettes in 18k Matte Yellow Gold
By Loriann Stevenson Fine Jewelry
Located in Santa Monica, CA
Handmade 5.30ct boulder opal band with .20ct diamond baguette accents in 18k matte yellow gold
Category

21st Century and Contemporary American Contemporary Fashion Rings

Materials

Diamond, Opal, 18k Gold, Yellow Gold

Australian 21.86ct Boulder Opal, Diamond, Platinum 18K Gold Necklace
Located in MAIN BEACH, QLD
This stunning piece is a very unique solid Australian Boulder Opal. Deep mysterious blues and
Category

Late 20th Century Australian Pendant Necklaces

Materials

Diamond, Opal, Black Opal, 18k Gold, Platinum

Australian 7.00ct Boulder Opal, Diamond, 18K Gold Platinum Ring
Located in MAIN BEACH, QLD
black boulder opal is of clean, vivid colour, set in an 18K solid gold and platinum ring with high
Category

21st Century and Contemporary Australian Cocktail Rings

Materials

Diamond, Opal, Black Opal, 18k Gold, Platinum

Boulder Opal Necklace on 14 Karat Yellow Gold
By Alistair R
Located in Ballynahinch, Co Down
A stunning Boulder Opal pendant. Simply drilled, it is fitted to a 14 Karat yellow gold multistrand
Category

2010s British Contemporary Drop Necklaces

Materials

Opal, Gold, 14k Gold, Yellow Gold

Australian Boulder Opal Pendant 14 Karat Yellow Gold with Chain
Located in Barnsley, GB
Australian Boulder Opal Pendant 14 Karat Yellow Gold shows off very bright Colors Blue Red Yellow
Category

21st Century and Contemporary Australian Contemporary Pendant Necklaces

Materials

Opal, 14k Gold, Yellow Gold

3.78ct Australian Boulder Opal, Diamond, 18K Gold Platinum Necklace
Located in MAIN BEACH, QLD
heart with flutters this very cute flower necklace has it all. A moss green Boulder Opal has a very rare
Category

21st Century and Contemporary Australian Pendant Necklaces

Materials

Diamond, Opal, Black Opal, 18k Gold, Platinum

Amy Y 18K Gold, Boulder Opal and Diamond Contemporary Pendant Necklace Claire
By Amy Y
Located in Santa Monica, CA
Amy Y's boulder opal and diamond contemporary pendant necklace is a one-of-a-kind piece for all
Category

2010s American Contemporary Pendant Necklaces

Materials

White Diamond, Opal, 18k Gold, Rose Gold

Australian 2.60ct Boulder Opal, Diamond, 18K Gold Platinum Necklace
Located in MAIN BEACH, QLD
-green Boulder Opal with flicks of orange and gold and hints of purple this stone is truly a gem
Category

21st Century and Contemporary Australian Pendant Necklaces

Materials

Diamond, Opal, Black Opal, 18k Gold, Platinum

Australian Koroit Black Boulder Opal Sterling Silver Pendant by Ken Fury
By Ken Fury
Located in Queens, NY
, featuring a natural Australian Koroit black boulder opal stone. The intricate design of the pendant is
Category

2010s American Contemporary Pendant Necklaces

Materials

Opal, Sterling Silver

Amy Y 18K Gold, Australian Boulder Opal and Diamond Pendant Necklace Aspen
By Amy Y
Located in Santa Monica, CA
Amy Y’s 18K-yellow gold, diamond encrusted Australian boulder opal pendant necklace is a one-of-a
Category

2010s American Contemporary Pendant Necklaces

Materials

Diamond, Opal, 18k Gold, Yellow Gold

16.51 Carat Boulder Opal, Diamond, 18K Gold Platinum Collier Necklace
Located in MAIN BEACH, QLD
A daring piece for a dazzling result. This outstanding Australian Boulder Opal has a magnificent
Category

21st Century and Contemporary Australian Choker Necklaces

Materials

Diamond, Opal, 18k Gold, Platinum

18 Karat White Gold Australian Boulder Opal Diamond Pendant Chain
Located in QLD , AU
Australian Boulder Opal specifically from the Queensland region is highly sought after for the
Category

21st Century and Contemporary Australian Contemporary Pendant Necklaces

Materials

Diamond, Opal, 18k Gold, White Gold

Bi-Color Boulder Opal Pendant in 22 Karat and 18 Karat Gold
By The Golden Eye
Located in Santa Fe, NM
A striking Australian Bi-color Boulder Opal Pendant is framed in 22k gold and fitted with a wide
Category

2010s American Contemporary Pendant Necklaces

Materials

Opal, 18k Gold, 22k Gold, Gold

Giulians Contemporary 18k 19.26ct Australian Boulder Opal Cocktail Ring
By Giulians
Located in Sydney, NSW
Giulians contemporary 18k 19.26ct Australian Boulder Opal Ring. This cocktail ring showcases a
Category

2010s Australian Contemporary Cocktail Rings

Materials

Opal, 18k Gold

Boulder Opal Doublet and Diamond 18 Karat Yellow Gold Necklace
Located in Los Angeles, CA
18.25ct electric color boulder opal doublet and 18K yellow gold custom pendant accented with 84
Category

21st Century and Contemporary American Contemporary Pendant Necklaces

Materials

Diamond, Opal, 18k Gold

An Australian Boulder Opal Necklace Pendant set with Tourmaline, Tanzanite
By Kary Adam
Located in Seattle, WA
Boulder Opal necklace that features a large central Australian Boulder Opal pendant that is surrounded by
Category

2010s Thai Artisan Pendant Necklaces

Materials

Opal, Blue Sapphire, Pink Sapphire, Tanzanite, Tourmaline, Silver

7.88ct Natural Untreated Australian Boulder Opal
By Renata Bernard
Located in Sydney, AU
. This boulder opal was ethically sourced from Winton mines in Queensland. It is perfect for bespoke
Category

2010s Australian Contemporary Loose Gemstones

Materials

Opal

Australian 23.00ct Boulder Opal, Diamond, 18K Gold Platinum Necklace
Located in MAIN BEACH, QLD
Australian opal in all its exquisite beauty. This boulder opal is a true heirloom gem. At 23ct
Category

21st Century and Contemporary Australian Pendant Necklaces

Materials

Diamond, Opal, 18k Gold, Platinum

Natural Untreated Australian 32.73ct Boulder Opal Pendant Necklace 18K Gold
Located in Sydney, AU
The white-blues and sparkling silvers of wintry dreams swirl in this dreamy boulder opal pendant
Category

2010s Australian Contemporary Pendant Necklaces

Materials

Opal, 18k Gold, Yellow Gold

Natural Australian 27.56ct Boulder Opal and Diamonds Ring 18K Yellow Gold
By Renata Bernard
Located in Sydney, AU
“Love in White” opal ring is a celebration of unconditional love. The precious boulder opal
Category

2010s Australian Contemporary Cocktail Rings

Materials

Opal, Diamond, 18k Gold, Yellow Gold

Boulder Opal Pendant on a Gold Plated Silver Chain
By Kary Adam
Located in Seattle, WA
An Australian Boulder Opal Pendant on a Gold Plated 20" Silver Chain. Originally from San Diego
Category

2010s Australian Contemporary Pendant Necklaces

Materials

Opal, Gold Plate, Silver

Hand-Carved Solid Boulder Opal Sterling Silver Ring
Located in Waterloo, New South Wales
-carved boulder opal, matching the shape and design of the ring. The asymmetrical form of the opal
Category

21st Century and Contemporary Australian Contemporary Cocktail Rings

Materials

Opal, Sterling Silver

Australian 6.10ct Black Boulder Opal, Diamond, 18K Gold Platinum Necklace
Located in MAIN BEACH, QLD
The rich, bright colours of this unbelievable black boulder opal are without compare. The purples
Category

21st Century and Contemporary Australian Choker Necklaces

Materials

Diamond, Opal, 18k Gold, Platinum

Australian 19.06ct Boulder Opal, Diamond, 18k Gold Platinum Bracelet
Located in MAIN BEACH, QLD
diamonds, but it also features a stunning blue boulder opal with the colours of a tropical sea. An amazing
Category

1990s Australian Bangles

Materials

Diamond, Opal, 18k Gold, Platinum

Australian 8.24ct Boulder Opal, Diamond, 18K Gold Platinum Ring
Located in MAIN BEACH, QLD
A once-in-a-lifetime gem, this magical boulder opal is beyond belief. The colours are very vivid
Category

21st Century and Contemporary Australian Cocktail Rings

Materials

Diamond, Opal, 18k Gold, Platinum

Boulder Opal Pendant on a Gold-Plated Silver Chain
By Kary Adam
Located in Seattle, WA
An Australian Boulder Opal in Red Ironstone Matrix hanging from a 20" Gold Plated Silver Chain
Category

2010s Australian Contemporary Pendant Necklaces

Materials

Opal, Gold Plate, Silver

Australian Boulder Opal Diamond Pendant and Chian 18 Karat Yellow Gold
Located in Barnsley, GB
DESCRIPTION: Australian Boulder Opal Pendant And Chian 18 Karat Yellow Gold . This Opal Shows
Category

21st Century and Contemporary Australian Contemporary Pendant Necklaces

Materials

Diamond, Opal, 18k Gold, Yellow Gold

Australian 9.18ct Boulder Opal, Diamond, 18K Gold and Platinum Ring
Located in MAIN BEACH, QLD
. A stunning multi-patterned Black Boulder Opal, encrusted pavé set brilliant white diamonds, 18K
Category

21st Century and Contemporary Australian Cocktail Rings

Materials

Diamond, Opal, 18k Gold, Platinum

Natural Untreated Australian Boulder Opal Necklace in Sterling Silver
By Renata Bernard
Located in Sydney, AU
The regally sizeable ‘Cordelia’ boulder opal necklace set in sterling silver has style and
Category

2010s Australian Contemporary Multi-Strand Necklaces

Materials

Opal, Sterling Silver

Amy Y 53.00ct, Australian Boulder Opal, Diamond and 18K-Rose Gold Ring Grace
By Amy Y
Located in Santa Monica, CA
Amy Y's boulder opal, diamond and 18K-rose gold contemporary designed ring can only be described as
Category

2010s American Contemporary More Rings

Materials

Opal, White Diamond, Brown Diamond, 18k Gold, Rose Gold

Australian Boulder Opal Pendant with Diamond Accents on 18k Yellow Gold Chain
By Loriann Stevenson Fine Jewelry
Located in Santa Monica, CA
11.78ct Australian Boulder Opal on Handmade Signature oval link chain with Diamond accented bails
Category

21st Century and Contemporary American Contemporary Chain Necklaces

Materials

Diamond, Opal, 18k Gold, Yellow Gold

Australian Boulder Opal Diamond Necklace 18 Karat Yellow Gold
Located in Barnsley, GB
Australian Boulder Opal Diamond Necklace 18 Karat Yellow Gold This hand crafted highly
Category

21st Century and Contemporary Contemporary Pendant Necklaces

Materials

Diamond, Opal, 18k Gold, Yellow Gold

Australian 8.03ct Boulder Opal, Diamond, 18K Gold Platinum Ring
Located in MAIN BEACH, QLD
SPECIFICATIONS Opal Type: Boulder Opal Opal Weight: 8.03ct Opal Origin: Winton, QLD, Australia
Category

21st Century and Contemporary Australian Cocktail Rings

Materials

Diamond, Opal, 18k Gold, Platinum

Australian 6.35ct Boulder Opal, Diamond, 18K Gold Platinum Ring
Located in MAIN BEACH, QLD
beautiful boulder opal that will bring you back to a tropical holiday every time you look upon it
Category

Late 20th Century Australian Cocktail Rings

Materials

Diamond, Opal, 18k Gold, Platinum

Australian 4.38ct Boulder Opal, Diamond, 18K Gold Platinum Necklace
Located in MAIN BEACH, QLD
SPECIFICATIONS Opal Type: Boulder Opal Opal Weight: 4.38ct Opal Origin: Winton, QLD, Australia
Category

21st Century and Contemporary Australian Pendant Necklaces

Materials

Diamond, Opal, Black Opal, 18k Gold, Platinum

Natural Untreated Australian 19.46ct Boulder Opal Ring in 18k White Gold
By Renata Bernard
Located in Sydney, AU
boulder opal from our own mines in Jundah-Opalville is set in an ultra-contemporary 18K gold setting that
Category

2010s Australian Contemporary Cocktail Rings

Materials

Opal, 18k Gold, White Gold

Boulder Opal Diamond 18 Karat White Gold Cocktail Ring by Grima
By Grima
Located in QLD , AU
fabulous blue / green boulder opal as the centrepiece surrounded with fine round cut diamonds and beads of
Category

Late 20th Century British Contemporary Cocktail Rings

Materials

Diamond, Opal, 18k Gold, White Gold

6.66 Carat Boulder Opal, Diamond, 18K Gold Platinum Collier Necklace
Located in MAIN BEACH, QLD
goldsmith. The opal in this piece is a pinfire/palette flash patterned black boulder opal for the outback
Category

21st Century and Contemporary Australian Choker Necklaces

Materials

Diamond, Opal, 18k Gold, Platinum

Natural Australian 7.43ct Boulder Opal and Diamond Cocktail Ring 18k Yellow Gold
By Opal Minded
Located in Sydney, AU
The impressive and opulent Ta Prohm boulder opal ring (7.43ct) is a piece that carries the ancient
Category

2010s Australian Contemporary Cocktail Rings

Materials

Diamond, Opal, Black Opal, Gold, 18k Gold, Yellow Gold

Margery Hirschey Boulder Opal and Emerald 22-Karat Gold Drop Earrings
Located in Saint Louis, MO
asymmetric mix of enchanting gemstones. Pear- and emerald-cut emeralds and boulder opals are set in prong and
Category

2010s American Contemporary Dangle Earrings

Materials

Emerald, Opal, Yellow Diamond, 22k Gold

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Boulder Opals For Sale on 1stDibs

Browse a vast assortment of boulder opals for sale on 1stDibs. These distinct designs — crafted with great care and often made from gold, 18k gold and yellow gold — can elevate any look. Our selection of items includes 260 vintage examples as well as 1200 contemporary versions. Our inventory has long been popular, and it includes earlier versions that date to the 18th Century and newer variations that were made as recently as the 21st Century. contemporary and artisan are consistently popular styles when it comes to boulder opals. Versions of these items have been a part of the life’s work for many jewelers, but those produced by Renata Bernard, Laura Dalben and Jennifer Kalled are consistently popular. There are many cabochon, oval cut and mixed cut boulder opals for sale. When shopping our range of boulder opals, you’ll find that there are less available pieces for men today than there are for women.

How Much are Boulder Opals?

On average, boulder opals at 1stDibs sell for $4,384, while they’re typically $1 on the low end and $350,000 for the highest priced versions of this item.

Why Gold Shines in Jewelry Craftsmanship

Gold is the feel-good metal, the serotonin of jewelry. Wear vintage and antique gold necklaces, watches, gold bracelets or gold rings and you feel happy, you feel dressed, you feel, well, yourself. 

Gold, especially yellow gold, with its rich patina and ancient pedigree going back thousands of years, is the steady standby, the well-mannered metal of choice. Any discussion of this lustrous metal comes down to a basic truth: Gold is elementary, my dear. Gold jewelry that couples the mystique of the metal with superb design and craftsmanship achieves the status of an enduring classic. Many luxury houses have given us some of our most treasured and lasting examples of gold jewelry over the years.

Since its founding, in 1837, Tiffany Co. has built its reputation on its company jewelry as well as its coterie of boutique designers, which has included Jean Schlumberger, Donald Claflin, Angela Cummings and Elsa Peretti. There are numerous gold Tiffany classics worth citing. Some are accented with gemstones, but all stand out for their design and the workmanship displayed.

For the woman who prefers a minimalist look, the Tiffany Co. twist bangle (thin, slightly ovoid) is stylishly simple. For Cummings devotees, signature pieces feature hard stone inlay, such as her pairs of gold ear clips inlaid with black jade (a play on the classic Chanel black and tan), or bangles whose design recalls ocean waves, with undulating lines of lapis lazuli and mother-of-pearl. And just about any design by the great Jean Schlumberger is by definition a classic.

Even had he eschewed stones and diamonds, Southern-born David Webb would be hailed for the vast arsenal of heavy gold jewelry he designed. Gold, usually hammered or textured in some manner, defines great David Webb jewelry. The self-taught jeweler made very au courant pieces while drawing inspiration from ancient and out-of-the-way sources — East meets West in the commanding gold necklaces made by Webb in the early 1970s. The same could be said for his endlessly varied gold cuffs.

In Europe, many houses have given us gold jewelry that sets the highest standard for excellence, pieces that were highly sought after when they were made and continue to be so. 

Numerous designs from Cartier are homages to gold. There are the classic Trinity rings, necklaces and bracelets — trifectas of yellow, white and rose gold. As a testament to the power of love, consider the endurance of the Cartier Love bracelet.

Aldo Cipullo, Cartier’s top in-house designer from the late 1960s into the early ’70s, made history in 1969 with the Love bracelet. Cipullo frequently said that the Love bracelet was born of a sleepless night contemplating a love affair gone wrong and his realization that “the only remnants he possessed of the romance were memories.” He distilled the urge to keep a loved one close into a slim 18-karat gold bangle. 

BVLGARI and its coin jewelry, gemme nummarie, hit the jackpot when the line launched in the 1960s. The line has been perennially popular. BVLGARI coin jewelry features ancient Greek and Roman coins embedded in striking gold mounts, usually hung on thick link necklaces of varying lengths. In the 1970s, BVLGARI introduced the Tubogas line, most often made in yellow gold. The Tubogas watches are classics, and then there is the Serpenti, the house's outstanding snake-themed watches and bracelets.

A collection called Monete that incorporated the gold coins is one of several iconic BVLGARI lines that debuted in the 1970s and ’80s, catering to a new generation of empowered women. Just as designers like Halston and Yves Saint Laurent were popularizing fuss-free ready-to-wear fashion for women on the go, BVLGARI offered jewels to be lived in

Since Van Cleef Arpels opened its Place Vendôme doors in 1906, collection after collection of jewelry classics have enchanted the public. As predominantly expressed in a honeycomb of gold, there is the Ludo watch and accessories, circa the 1920s, and the golden Zip necklace, 1951, whose ingenious transformation of the traditional zipper was originally proposed by the Duchess of Windsor. Van Cleef's Alhambra, with its Moroccan motif, was introduced in 1968 and from the start its popularity pivoted on royalty and celebrity status. It remains one of VCA’s most popular and collected styles.

Mention must be made of Buccellati, whose name is synonymous with gold so finely spun that it suggests tapestry. The house’s many gold bracelets, typically embellished with a few or many diamonds, signified taste and distinction and are always in favor on the secondary market. Other important mid-20th-century houses known for their gold-themed jewelry include Hermès and Ilias Lalaounis.

Find a stunning collection of vintage and antique gold jewelry on 1stDibs.

The Legacy of Opal in Jewelry Design

Opals were discovered in 400 BC, and since then five types have been found throughout the world. Before you start shopping for mysteriously beautiful vintage opal rings and other opal jewelry, learn about the different varieties of the gem — and find out which historical figure was reportedly willing to trade his kingdom for a single stone.

Here is a little riddle for you: the month of October has two birthstones, but only one of them encompasses the colors of other birthstones. If you guessed opal, you’re right! (The other gemstone associated with the month of October is tourmaline.)

Opals are such unusual gemstones that there are too many old-wives tales associated with them, like if you’re a blond, wearing an opal necklace will protect your locks from losing color. Opals were also very fashionable in the early 19th century, up until the publication of Sir Walter Scott’s novel Anne of Geierstein in 1829. The title heroine wears an opal and succumbs to an untimely death. However, the British monarchy, and in particular Queen Victoria, did not let this story get in their way, and they frequently gifted opals to friends and family members. October babies should disregard the noise and proudly wear their opals!

There are five types of precious opals: boulder opal, fire opal, crystal/water opal, black opal, and white/light opal. Each variety is distinguished by its color.

So, where does the name come from? The word opal is thought to originate from the Roman opalus or from the Sanskrit úpala (“precious stone”) or from the Greek opallios (“to see a color change”). So while there have been many names for the stones, opals were first discovered in 400 BC in Ethiopia. But the early reference that comes up most often in history books is from the Roman philosopher Pliny the Elder, who wrote about it in 75 AD. In his text he refers to it as opali. The Romans were big fans of opal, Mark Antony was so enamored by it that, as the story goes, he was willing to trade a portion of his kingdom for a single opal.

There's a wide variety of antique and vintage opal jewelry on 1stDibs (and you won't have to trade your kingdom for it).

Questions About Boulder Opals
  • 1stDibs ExpertAugust 17, 2021
    An Australian boulder opal is an opal mined from a large ironstone boulder under the ground. This type of opal is the second most valuable opal behind the black opal. Spot an Australian boulder opal by checking for a solid layer of brown ironstone left on the back of the stone. Shop Australian boulder opals on 1stDibs.