Black Opal Ring with Ruby-Red Spinels Diamonds 37 Grams Certified No-Heat

Natural, unheated Burmese pink sapphires and a halo of single-cut diamonds surround a central oval pink sapphire in this late Victorian ring. Cra...

A lush apple-green half-cylinder of natural and untreated Burmese jadeite jade is the bright and impressive focal point of this 18K white gold circa 1990s -though never worn- jade sa...

An enormous, spectacular four-carat cabochon-cut vivid pinkish-red no-heat Burma ruby commands attention in this extraordinary platinum Mid-century ring. The stoplight-red ruby measures 10.33mm x 8.74mm x 4.84mm and weighs 4.75 carats. Three sleek tapered baguette diamonds and a pair of round brilliants compliment the ruby on either side. Together the diamonds weigh approximately .25 carats. The diamonds are bright white (F/G) and near-flawless (VS1). This exceedingly rare and important stone came...

Black opals from the Lightning Ridge mines in Australia are the rarest and most valuable opals on earth. And Lightning Ridge black opals that display a vivid red flash are the most valuable opals of all. This pendant is a perfect example of why these rare, precious opals are so coveted. With a superb cut and gleaming high polish, this solid (not a double or a triplet) Australian black opal from the Lightning Ridge mines has an organic, loosely triangular form and weighs approximately 2.42 carats. The gem flashes brilliant, vivid red, yellow, turquoise, purple and cobalt blue. The natural beauty of the stone has been maximized to its most magnificent potential by a skilled lapidary artist. Set within a custom 18k yellow gold frame -that exposes the rear of the opal, so that you can see with your own eyes that this is a solid black opal- and featuring a bail set with a .03ct VS brilliant round diamond. A 20" .4mm solid 18K Italian gold chain...