18k White Gold 8.20ct Oval Tanzanite and Diamond Cocktail Ring

18k White Gold 8.20ct Oval Tanzanite and Diamond Cocktail Ring

This striking ring is in excellent condition and ready to ship!

Tanzanite is one of the rarest gemstones on earth, found in a single square mile of northern Tanzania near the foot of Mount Kilimanjaro. Its extraordinary trichroic character means the stone shifts between violet, blue, and burgundy depending on the angle of light — a phenomenon no sapphire can replicate. At 8.20 carats, this oval example represents the kind of scale typically reserved for museum-quality specimens, and the fact that it carries no heat treatment makes it rarer still. Untreated tanzanites of this size display a depth and complexity that heated stones simply cannot match.

The oval cut is the ideal vehicle for a stone of this weight. It maximizes the apparent face-up size, preserves the saturation in the belly of the gem, and avoids the bow-tie shadowing that plagues lesser cutting. Set in a prong mount that cradles the stone with minimal metal obstruction, the tanzanite commands the ring entirely. The surrounding halo of natural round brilliants and channel-set baguette diamonds in near-colorless G-H / VS-SI quality keeps the white gold frame luminous without competing with that violet-blue center.

A ring like this is worn to be noticed. It suits a formal gown as naturally as it does a well-cut blazer at dinner, and its size 7 fit translates to a broad range of wearers with the added reassurance that it can be sized. For the collector who wants a colored gemstone at cocktail-ring scale without the compromises of treated material, this 18k white gold tanzanite and diamond ring is a serious acquisition.

Each piece is fully inspected and authenticated by Raymond Lee Jewelers in Boca Raton.