Amazing Australian Boulder Opal 18.68 ct. Cabochon Cut.

Amazing Australian Boulder Opal – 18.68 ct Cabochon Cut

Striking natural boulder opal from Australia. 18.68 ct with a captivating pattern—perfect for a meaningful and unique jewelry piece.

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$288.00

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Birthstone

Opal is the official birthstone for October, alongside tourmaline, and is also the gem of the 14th wedding anniversary. Its name comes from the Sanskrit “Upala,” meaning “precious stone,” and the Greek “opallios,” meaning “to see a change of colors.” This unique gem belongs to the silica group and is made up of microscopic spheres that diffract light, creating the beloved play-of-color. Long associated with luck and inspiration, opals remain one of nature’s most enchanting treasures.

Gemstone Description

I fell in love with this 18.68 ct Australian Boulder Opal the moment I saw it. Its pattern is truly captivating—sometimes resembling a watchful amulet, other times a snow-capped mountain among ancient rocks. The play between the earthy matrix and vivid blue-green flashes makes it both mysterious and elegant.

Cabochon cut and polished to highlight its natural charm, this untreated gem is perfect for a bold pendant or statement ring. Each boulder opal is one of a kind—this one is no exception.
Gemstones 100% Ethical and Natural.

Discover our opal pairs for more inspiration.

Gemstone Specifications

WEIGHT 1: 18.68ct
SIZE 1: 27.12 * 15.11 * 5.79 mm
SHAPE : Cabochon
CLARITY GRADE : Opaque
TREATMENT : Untreated
HARDNESS : 5 - 6.5

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Amazing Australian Boulder Opal – 18.68 ct Cabochon Cut

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