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13.03 ct Multicolor Boulder Opal Gemstone, Boulder Opal Gem in Cushion Cabochon Shape for Sale.
Photos are of Actual Product for Sale
13.03 ct Multicolor Boulder Opal Stone, Natural Boulder Opal in Cushion Cabochon Shape for Sale Boulder Opal Gemstone in 20 x 15 mm (calibrated) Size for Sale, Boulder Opal Stone in Multicolor Color

13.03ct Multicolor Boulder Opal, Cushion Cut, 19.4x15.2 mm

9.6 out of 10
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Product ID: 523150
Type: Boulder Opal
Weight: 13.03 ct 1 gem
Size: 20 x 15 mm calibrated
Size: 19.4 x 15.2 x 4.2 mm
Exact Size: 19.37 x 15.16 x 4.24 mm
Length x Width x Depth
Shape: Cushion Cabochon
Color: Multicolor
Clarity: Opaque
Treatment: Untreated
Origin: Australia
Content: 1 pc
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Product Description

This is a 13.03 carat natural multicolor Boulder Opal gem, 1 pc in cushion shape with an exact size of 19.37 x 15.16 x 4.24 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 -> 9 star ratings

Plan on purchasing on an ongoing basis. So far.....so good....

Posted By Jim in January, 2026
Source: Bizrate

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This is the first time I have used this site. I was dissatisfied with the quality of gems and supplies elsewhere and decided to try GemSelect. They are awesome! I was thrilled to see the variety and the great web performance. There was the ability to search for information as well as gems. Things like the clarity rating system and caret weight of the gems. I have always loved making things and I have just started to make jewelry as a business. However I have never made a ring before and have always wanted to. On GemSelect I was able to find good quality gems to use in my creations. I am so glad the website is so easy to use. Thank you GemSelect.

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Overall Rating -> 10 star ratings

It's mostly good, only some item's are easier to find through the search than the menu

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

Love beauty, color, quality, and price of these gems. Personal projects and will come here soon and everytime.

Posted By Darkstar in June, 2025
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Overall Rating -> 8 star ratings

I visited several online loose stone shops trying to find rare stones. I finally found one that I've been looking for here, and very satisfied. Looking forward to receive the item in 3 weeks.

Posted By Atsu in December, 2025
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Overall Rating -> 10 star ratings

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Posted By GreenGator in August, 2025
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