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12.31 ct Multicolor Boulder Opal Gemstone, Boulder Opal Gem in Oval Cabochon Shape for Sale.
Photos are of Actual Product for Sale
12.31 ct Multicolor Boulder Opal Stone, Natural Boulder Opal in Oval Cabochon Shape for Sale Boulder Opal Gemstone in 25.9 x 17.1 mm Size for Sale, Boulder Opal Stone in Multicolor Color

12.31ct Multicolor Boulder Opal, Oval Cut, 25.9x17.1 mm

9.7 out of 10
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Product ID: 679219
Type: Boulder Opal
Weight: 12.31 ct 1 gem
Size: mm calibrated
Size: 25.9 x 17.1 x 2.8 mm
Exact Size: 25.91 x 17.08 x 2.80 mm
Length x Width x Depth
Shape: Oval Cabochon
Color: Multicolor
Clarity: Opaque
Treatment: Untreated
Origin: Australia
Content: 1 pc
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Product Description

This is a 12.31 carat natural multicolor Boulder Opal gem, 1 pc in oval shape with an exact size of 25.91 x 17.08 x 2.80 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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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

Easy to conduct search, good amount of stock to select from along with variety of prices.

Posted By Que in June, 2025
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Overall Rating -> 9 star ratings

Ita's a pretty good and simple way to find gems that youa're looking for amazing selection

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The website was easy to use and there were a lot of good options, I was satisfied.

Posted By Brielly in January, 2026
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Overall Rating -> 8 star ratings

It was fine

Posted By Na in April, 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
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Enlarged Gemstone Image