Australian Boulder Opal – Cabochon Cut – 25.86 ct

Exceptional 25.86 ct Australian Boulder Opal with dynamic pattern and vivid color rays—perfect for a one-of-a-kind bespoke jewel.

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$310.00

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Gemstone Description

This mesmerizing 25.86 ct Australian Boulder Opal is a natural masterpiece. Its bold cabochon form showcases an extraordinary interplay of color and texture—appearing to shift and transform as light strikes the surface. Vivid rays of green, blue, and red peek through what resemble natural stone “columns,” creating an almost architectural feel.

A true conversation piece, this untreated opal is ideal for a dramatic pendant or collector's treasure. Like all boulder opals, it is completely unique—100% ethical, natural, and formed by nature’s own artistry.

Specifications

WEIGHT 1: 25.86 ct
SIZE 1: 27.51 * 23.80 * 7.23 mm
SHAPE : Cabochon
CLARITY GRADE : Opaque
TREATMENT : Untreated
HARDNESS : 5.5 - 6.5

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.

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Australian Boulder Opal – Cabochon Cut – 25.86 ct

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