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10.15 ct Multicolor Boulder Opal Gemstone, Boulder Opal Gem in Fancy Cabochon Shape for Sale.
Photos are of Actual Product for Sale
10.15 ct Multicolor Boulder Opal Stone, Natural Boulder Opal in Fancy Cabochon Shape for Sale Boulder Opal Gemstone in 18 x 13 mm (calibrated) Size for Sale, Boulder Opal Stone in Multicolor Color

10.15ct Multicolor Boulder Opal, Fancy Shape, 18.6x12.8 mm

9.6 out of 10
See Bizrate Ratings for GemSelect
Boulder Opal Product ID: 636046
Type: Boulder Opal
Boulder Opal Weight: 10.15 ct Boulder Opal 1 gem
Boulder Opal Size: 18 x 13 mm calibrated Boulder Opal
Boulder Opal Size: 18.6 x 12.8 x 4.6 mm Boulder Opal
Boulder Opal Exact Size: 18.62 x 12.82 x 4.64 mm
Length x Width x Depth
Boulder Opal Shape: Fancy Cabochon Boulder Opal
Boulder Opal Color: Multicolor Boulder Opal
Boulder Opal Clarity: Opaque Boulder Opal
Boulder Opal Treatment: Untreated
Boulder Opal Origin: Australia Boulder Opal
Content: 1 pc
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Product Description

This is a 10.15 carat natural multicolor Boulder Opal gem, 1 pc in fancy shape with an exact size of 18.62 x 12.82 x 4.64 mm. This loose Boulder Opal gemstone was mined in Australia and its clarity is Opaque. No treatment has been applied on this natural Boulder Opal stone

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GemSelect Certified Store Reviews

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Overall Rating -> 10 star ratings

So far So good

Posted By VH-1 in July, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

Love the precise descriptions and calibrations of hte loose gemstones. Would like to have seen more variety in the size gem I was looking for.

Posted By RenoRose in January, 2026
Source: Bizrate

Overall Rating -> 10 star ratings

It's always a pleasure doing business with Gem Select. Outstanding products ant very reasonable prices. Thank You One and All.

Posted By G.W. or Bakyow in July, 2025
Source: Bizrate

Overall Rating -> 9 star ratings

I am very pleased with the ways you can filter your searches on this site, finding exactly what I want with little knowledge of what I am looking for is surprisingly easy!

Posted By Leo in March, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

I have shopped at Gemselect for nearly 20 years. I especially like that you see pictures of the exact gem you are purchasing. You are a trusted source.

Posted By DNaber in October, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

On the clarity options it goes "and better" so if youre looking for si specifically and you click si and better it still shows you basically everything. It just removes the opaques. Itd be nice if it was vs only, vss only, si only, etc

Posted By Iamnotakrustykrab in December, 2025
Source: Bizrate
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