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12.53 ct Multicolor Boulder Opal Gemstone, Boulder Opal Gem in Oval Cabochon Shape for Sale.
Photos are of Actual Product for Sale
12.53 ct Multicolor Boulder Opal Stone, Natural Boulder Opal in Oval Cabochon Shape for Sale Boulder Opal Gemstone in 17.8 x 13.7 mm Size for Sale, Boulder Opal Stone in Multicolor Color

12.53ct Multicolor Boulder Opal, Oval Cut, 17.8x13.7 mm

9.6 out of 10
See Bizrate Ratings for GemSelect
Product ID: 678670
Type: Boulder Opal
Weight: 12.53 ct 1 gem
Size: mm calibrated
Size: 17.8 x 13.7 x 7.1 mm
Exact Size: 17.79 x 13.68 x 7.14 mm
Length x Width x Depth
Shape: Oval Cabochon
Color: Multicolor
Clarity: Opaque
Treatment: Untreated
Origin: Australia
Content: 1 pc
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$
75.18
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Product Description

This is a 12.53 carat natural multicolor Boulder Opal gem, 1 pc in oval shape with an exact size of 17.79 x 13.68 x 7.14 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

GemSelect: Over 22 Years in the Gemstone Business! Thank you for trusting us with your purchase!

Overall Rating -> 10 star ratings

I have purchased stones from gem select in the past and have been very satisfied. I expect to repeat that experience with this purchase as well

Posted By Marti in July, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

went well

Posted By Doug in May, 2025
Source: Bizrate

Overall Rating -> 9 star ratings

Nothing bad to report. Everything is as expected. The gems and the price are all very good.

Posted By Dafanatic in August, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

I needed a very specific color of tourmaline and Gem Select had it. I had to get the client to agree and then ordered the stone. It arrived better than pictured and we all were very happy.

Posted By Tim W in February, 2026
Source: Bizrate

Overall Rating -> 8 star ratings

Good prices

Posted By TRM in October, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

Very food

Posted By Keeto in July, 2025
Source: Bizrate
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