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Home Gemstones Opal
8.21 ct Green Opal Gemstone, Opal Gem in Oval Cabochon Shape for Sale.
Photos are of Actual Product for Sale
8.21 ct Green Opal Stone, Natural Opal in Oval Cabochon Shape for Sale Opal Gemstone in 18.5 x 12.5 mm Size for Sale, Opal Stone in Medium Green Color

8.21ct Natural Green Opal, Oval Cut, 18.5x12.5 mm

9.7 out of 10
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Product ID: 675199
Type: Opal
Weight: 8.21 ct 1 gem
Size: mm calibrated
Size: 18.5 x 12.5 x 6.3 mm
Exact Size: 18.49 x 12.45 x 6.31 mm
Length x Width x Depth
Shape: Oval Cabochon
Color: Medium Green
Clarity: Opaque
Treatment: Untreated
Origin: Brazil
Content: 1 pc
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Product Description

This is a 8.21 carat natural medium green Opal gem, 1 pc in oval shape with an exact size of 18.49 x 12.45 x 6.31 mm. This loose Opal gemstone was mined in Brazil and its clarity is Opaque. No treatment has been applied on this natural Opal stone

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GemSelect Certified Store Reviews

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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
Source: Bizrate

Overall Rating -> 10 star ratings

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.

Posted By My real name Dean or Wandering about in May, 2026
Source: Bizrate

Overall Rating -> 9 star ratings

Always a good quality stone. Priced fairly and shipped promptly. Answers emails quickly

Posted By Ron T in November, 2025
Source: Bizrate

Overall Rating -> 9 star ratings

It was great!

Posted By Annie in September, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

I love the ability to choose from many options of shapes, gemstone type, color, and so forth. It is fun!

Posted By Geof in November, 2025
Source: Bizrate

Overall Rating -> 9 star ratings

I think therea's no problem

Posted By Napoleon in August, 2025
Source: Bizrate
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