Skip to main content
Want more images or videos?
Request additional images or videos from the seller
1 of 9

Natural London Blue Topaz Gemstone21.23 Ct Oval Mixed Cut.

$527.98
£391.27
€440
CA$721.60
A$785.52
CHF 416.95
MX$9,451.45
NOK 5,283.35
SEK 4,841.04
DKK 3,351.61

About the Item

Offered Oval Mixed cut Natural Gemstone Flawless London Blue Topaz 21.23 ct. It's 'AAA' Quality Loop Clean Gemstone. Transparent. Ideal for ring of pendant! Dimensions:13.08mm*18.35mm*14.59mm Origin : Brazil Treatment: heated London Blue topaz has a fair bit of mystery and intrigue surrounding it. The stone has a specific hue of blue that makes it look almost inky and sets it apart from regular blue topaz, which is also known as Swiss Blue topaz. It’s often confused with blue sapphires, but the two are actually quite different. By definition, London Blue topaz is a topaz stone that has a very specific, inky shade of blue. It’s darker than regular topaz but lighter than a sapphire. In fact, the color is best described as a halfway point between the two. The topaz stone is composed of fluorinated aluminum silicate. It measures in with a hardness of eight on the Mohs scale, which means that it is harder than quartz although it often grows alongside it. While harder than quartz, London Blue topaz is not as hard as sapphires, rubies or diamonds. The latter three are classified as gemstones, while topaz is classified as a mineral. At the moment, London Blue topaz is highly favored within the market. This has elevated its price slightly over that of regular blue topaz, but not by any amount that’s too significant in value. They do tend to add a sense of glamour to pieces of jewelry and outfits but can fetch as low as $10 to $30 per carat.
  • Stone:
  • Stone Cut:
  • Weight:
    21.23 ct
  • Place of Origin:
  • Period:
  • Date of Manufacture:
    unknown
  • Condition:
  • Seller Location:
    AMSTERDAM, NL
  • Reference Number:
    1stDibs: LU2625222169942

More From This Seller

View All
Natural London Blue Topaz Gemstone 23.05 Ct Round Mixed Cut.
Located in AMSTERDAM, NL
Offered Round Mixed cut Natural Gemstone Flawless London Blue Topaz 23.05 ct. It's 'AAA' Quality & Loop Clean Gemstone. Transparent. Ideal for ring of pendant! Dimensions:15.95m...
Category

2010s Brazilian Loose Gemstones

Materials

Topaz, Blue Topaz

ALGT Certified .7.00 Carat London BlueTopaz Diamond Cocktail Ring
Located in AMSTERDAM, NL
Offered: 18-kt handmade white gold women's ring with an oval facet cut Blue London Topaz of 7.00 ct. surrounded by 20 brilliant cut diamonds, approx. 1.20 ct, of quality E/F/VVS/VS. ...
Category

2010s European Contemporary Cocktail Rings

Materials

Diamond, 18k Gold

4.5 Carat London Blue Topaz Gold Earrings
Located in AMSTERDAM, NL
Beautiful 18 carat gold ear studs in new condition with two pieces of London Blue Topaz, approx. 4.5 ct in total Gold content: 18 kt (hallmarked) London Blue Topaz: 7m*9mm Size studs: 17mm*19mm Weight: 2.9 grams Working for couple of years for one of the famous diamond factories...
Category

2010s European Contemporary Hoop Earrings

Materials

Topaz, Gold, 18k Gold

ALGT Certified 1.85 carat Ceylon Sapphire Diamond White Gold Ring
Located in AMSTERDAM, NL
Exclusive ring in 18 kt white gold set with oval mixed cut sapphire of 1.85 carats and decorated with 14 pieces of brilliant cut diamonds. Total diamonds:0.25 ct F/G/VS/SI. ALGT cer...
Category

2010s European Contemporary Cocktail Rings

Materials

Diamond, Sapphire, 18k Gold, White Gold

ALGT Certified 2.30 carat oval mixed cut Deep Pink Spinel
Located in AMSTERDAM, NL
Offered beautiful 1.85 carat Intense Pink spinel. ALGT certificate is available. Weight: 2.30 Carats Shape: oval mixed Gem Dimensions: 8.38 x 6.81 x 4.98 mm Color: Deep Pink Treatm...
Category

2010s Asian Arts and Crafts Loose Gemstones

Materials

Spinel

ALGT Certified 1.37 carat Paraiba Tourmaline Diamond 18 kt Yellow Gold Ring
Located in AMSTERDAM, NL
Exclusive handmade ring in 18 kt yellow gold set with oval mixed cut paraiba tourmaline of 1.37 carats and decorated with 16 pieces of brilliant and baguette cut diamonds. Total diam...
Category

2010s European Early Victorian Engagement Rings

Materials

Diamond, Tourmaline, Paraiba, 18k Gold, Yellow Gold

You May Also Like

79.50 Carat Natural Loose London Blue Topaz Oval Shape Gemstone
Located in Peshawar, PK
Loose London Blue Topaz Weight: 79.50 Carats Dimension: 31 x 22 x 15.1 Mm Origin: Brazil Shape: Oval Color: Deep Blue Certificate: On Customer Demand London Blue Topaz is a mesmeri...
Category

21st Century and Contemporary Brazilian Arts and Crafts Loose Gemstones

Materials

Blue Topaz

12.85 Carats Faceted Blue Topaz Oval Shape
Located in Brisbane, AU
Faceted Blue Topaz Weight: 12.85 Carats Dimension: 15.5x12x9.3 Mm Origin: Brazil Colour: Blue Shape: Oval Certificate: On Customer Demand Blue Topaz is a striking and highly valued...
Category

21st Century and Contemporary Arts and Crafts Loose Gemstones

Materials

Blue Topaz

TJD Loose Natural Swiss Blue Topaz 13.71ct Oval Shape Gemstone for any Jewellery
By TJD
Located in New York, NY
Stone Information: Natural Swiss Blue Topaz Shape/Cut: Oval Shape Color: Blue Dimensions (mm): 16.00 x 12.00 x 8.83 Weight: 13.71ct
Category

21st Century and Contemporary Modern Loose Gemstones

Materials

Blue Topaz

AIGS Certified 4.80ct Oval Blue Zircon, 10.27x7.09x5.89 mm
Located in เกาะสมุย, TH
We ship from Thailand- International buyers are responsible for any applicable import duties, taxes, or customs fees levied by their destination country. These charges are not inclu...
Category

21st Century and Contemporary Cambodian Loose Gemstones

Materials

Blue Zircon

TJD Loose Natural Swiss Blue Topaz 11.59ct Oval Shape Gemstone for Any Jewellery
By TJD
Located in New York, NY
Stone Information: Natural Swiss Blue Topaz Shape/Cut: Oval Shape Color: Blue Dimensions (mm): 16.00 x 12.00 x 7.96 Weight: 11.59ct
Category

21st Century and Contemporary Modern Loose Gemstones

Materials

Blue Topaz

TJD Loose Natural Swiss Blue Topaz 11.73ct Oval Shape Gemstone for Any Jewellery
By TJD
Located in New York, NY
Stone Information: Natural Swiss Blue Topaz Shape/Cut: Oval Shape Color: Blue Dimensions (mm): 16.00 x 12.00 x 7.44 Weight: 11.73ct
Category

21st Century and Contemporary Modern Loose Gemstones

Materials

Blue Topaz