Burton's Gems and Opals
Jack | Vintage Koroit Boulder Opal Ring in 14kt White Gold, c.1930's
Jack | Vintage Koroit Boulder Opal Ring in 14kt White Gold, c.1930's
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Meet Jack,
A Koroit Boulder Opal in a Vintage Solitaire Ring
The Stone: Koroit Boulder Opal, solid
- origin: Koroit Opal Field, Queensland, Australia
- brightness of color: 3 of 5
- approximate stone measurements: 16.57mm x 10.8mm x 4.68
- rectangular cabochon cut
- modern stone
The Setting: Vintage Filigree Solitaire Ring
- 14kt white gold, solid
- North-South stone orientation
- top of ring width: 20.16mm (0.8")
- bottom of shank width: 2.24mm
- default size: 4.50
- circa 1930's (setting only)
More About Jack:
The ring mounting came to us in an estate buy and was set with a black onyx cameo. The cameo was damaged, so we decided to add a twist of our own. The Koroit boulder opal shows predominant colors of green and blue, and photos really do not do this piece justice. Dark matrix, good brightness, and looks great on both men and women.

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Shipping, Handling, & Inventory
Your order will be processed and shipped within 4 business days. All shipments are insured by the United States Postal Service, and most orders of $500 or more will require signature confirmation upon delivery.
While we work hard to present our online customers with accurate inventory availability, we reserve the right to cancel and refund a sale if the item is sold somewhere else first.
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Item: Jack | Vintage Koroit Boulder Opal Ring in 14kt White Gold, c.1930's