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Home Gemstones Boulder Opal
11.09 ct Multicolor Boulder Opal Gemstone, Boulder Opal Gem in Trillion Cabochon Shape for Sale.
Photos are of Actual Product for Sale
11.09 ct Multicolor Boulder Opal Stone, Natural Boulder Opal in Trillion Cabochon Shape for Sale Boulder Opal Gemstone in 20.3 x 16.2 mm Size for Sale, Boulder Opal Stone in Multicolor Color

11.09ct Multicolor Boulder Opal, Trillion, 20.3x16.2 mm

9.7 out of 10
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Product ID: 744113
Type: Boulder Opal
Weight: 11.09 ct 1 gem
Size: mm calibrated
Size: 20.3 x 16.2 x 5.1 mm
Exact Size: 20.25 x 16.24 x 5.13 mm
Length x Width x Depth
Shape: Trillion Cabochon
Color: Multicolor
Clarity: Translucent
Treatment: Untreated
Origin: Australia
Content: 1 pc
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Product Description

This is a 11.09 carat natural multicolor Boulder Opal gem, 1 pc in trillion shape with an exact size of 20.25 x 16.24 x 5.13 mm. This loose Boulder Opal gemstone was mined in Australia and its clarity is Translucent. 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

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 -> 8 star ratings

Good prices

Posted By TRM in October, 2025
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Overall Rating -> 10 star ratings

My whole experience is great.

Posted By Ghs in November, 2025
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Overall Rating -> 9 star ratings

Everything was good, the purchase was what I expected and what they show is what you get.

Posted By Mr. in March, 2026
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Overall Rating -> 10 star ratings

Great selection of gems at a reasonable price

Posted By Curt in July, 2025
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Overall Rating -> 10 star ratings

I was able to find what I've been looking for.

Posted By Tree Dog in April, 2026
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