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16.81 ct Multicolor Boulder Opal Gemstone, Boulder Opal Gem in Fancy Cabochon Shape for Sale.
Photos are of Actual Product for Sale
16.81 ct Multicolor Boulder Opal Stone, Natural Boulder Opal in Fancy Cabochon Shape for Sale Boulder Opal Gemstone in 28.8 x 13.1 mm Size for Sale, Boulder Opal Stone in Multicolor Color

16.81ct Multicolor Boulder Opal, Fancy Shape, 28.8x13.1 mm

9.7 out of 10
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Product ID: 628411
Type: Boulder Opal
Weight: 16.81 ct 1 gem
Size: mm calibrated
Size: 28.8 x 13.1 x 5.6 mm
Exact Size: 28.78 x 13.11 x 5.57 mm
Length x Width x Depth
Shape: Fancy Cabochon
Color: Multicolor
Clarity: Opaque
Treatment: Untreated
Origin: Australia
Content: 1 pc
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Product Description

This is a 16.81 carat natural multicolor Boulder Opal gem, 1 pc in fancy shape with an exact size of 28.78 x 13.11 x 5.57 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

The stones are very nice.

Posted By Mvk in August, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

Have made 2 purchases so far from GemSelect and they have been amazing! Anytime I requested additional info, videos or pictures of a particular item, the response was always timely and helpful. This is a great place to buy, if you are looking for loose stones. Highly recommend!

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Found a rock that met my need. Bought it!

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My current project is something BLUE . Opal earrings with matching tennis bracelet for her wedding. The opals and sixty two sapphires VVS & VS are AMAZINGLY BEAUTIFUL. The private jewelers were impressed by the clarity and inclusion free of the sapphires . I want to say thank you for the High quality sapphires that I purchased for my daughtera's wedding.

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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
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