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Home Gemstones Smoky Quartz
12.28 ct Brown Smoky Quartz Gemstone, Smoky Quartz Gem in Round Buff-Top Shape for Sale.
Photos are of Actual Product for Sale
12.28 ct Brown Smoky Quartz Stone, Natural Smoky Quartz in Round Buff-Top Shape for Sale Smoky Quartz Gemstone in 16 mm (calibrated) Size for Sale, Smoky Quartz Stone in Medium Brown Color

12.28ct Natural Brown Smoky Quartz, Round Cut, 16.11 mm

9.7 out of 10
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Product ID: 612070
Type: Smoky Quartz
Weight: 12.28 ct 1 gem
Size: 16 mm calibrated
Size: 16.1 mm
Exact Size: 16.11 x 10.44 mm
Diameter x Depth
Shape: Round Buff-Top
Color: Medium Brown
Clarity: Transparent
Treatment: Untreated
Origin: Brazil
Content: 1 pc
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Product Description

This is a 12.28 carat natural medium brown Smoky Quartz gem, 1 pc in round shape with an exact size of 16.11 mm x 10.44 mm . This loose Smoky Quartz gemstone was mined in Brazil and its clarity is Transparent. No treatment has been applied on this natural Smoky Quartz stone

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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
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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 -> 9 star ratings

Very good and simple exchange

Posted By Waylon in March, 2026
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Love the precise descriptions and calibrations of hte loose gemstones. Would like to have seen more variety in the size gem I was looking for.

Posted By RenoRose in January, 2026
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Overall Rating -> 9 star ratings

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Posted By Bawb in May, 2026
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