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Home Gemstones Boulder Opal
12.35 ct Multicolor Boulder Opal Gemstone, Boulder Opal Gem in Marquise Cabochon Shape for Sale.
Photos are of Actual Product for Sale
12.35 ct Multicolor Boulder Opal Stone, Natural Boulder Opal in Marquise Cabochon Shape for Sale Boulder Opal Gemstone in 22.5 x 10.8 mm Size for Sale, Boulder Opal Stone in Multicolor Color

12.35ct Multicolor Boulder Opal, Marquise, 22.5x10.8 mm

9.7 out of 10
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Product ID: 243151
Type: Boulder Opal
Weight: 12.35 ct 1 gem
Size: mm calibrated
Size: 22.5 x 10.8 x 6.1 mm
Exact Size: 22.53 x 10.77 x 6.06 mm
Length x Width x Depth
Shape: Marquise Cabochon
Color: Multicolor
Clarity: Opaque
Treatment: Untreated
Origin: Australia
Content: 1 pc
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Product Description

This is a 12.35 carat natural multicolor Boulder Opal gem, 1 pc in marquise shape with an exact size of 22.53 x 10.77 x 6.06 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 -> 9 star ratings

I loved the selection of gemstones you have a to z

Posted By James in May, 2026
Source: Bizrate

Overall Rating -> 10 star ratings

Would have bought an indigo and selenite, but neither listed. But, you do offer quite a large assortment otherwise.

Posted By JD in July, 2025
Source: Bizrate

Overall Rating -> 8 star ratings

Site worked well and helped me find a rock that matched what I was looking for. Well within budget and I trust it will show up, so that's definitely positive. Not much else to it. Satisfied.

Posted By Big Ricky in May, 2026
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

Overall Rating -> 10 star ratings

Good selection, using for custom jewlery for my wife.

Posted By Smitty in June, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

I purchased from you before and I have never been disappointed. I always received what I expected and your products are very nice.

Posted By MVK in July, 2025
Source: Bizrate
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