Natural Thompsonite — 16.00 ct, United States (Minnesota), Cabochon (GL)
Natural Thompsonite — 16.00 ct, United States (Minnesota), Cabochon (GL)
This 16.00 carat thompsonite originates from Minnesota, in the Lake Superior region, a well-known source of this zeolite mineral. Minnesota thompsonite is typically encountered in nodular form and is commonly fashioned into cabochons to display internal radial structures and color patterning. This example has been polished as a cabochon and displays natural color. No treatments are present.
Origin: Lake Superior, Minnesota
Weight: 16.0 carats
Size: 19.7 x 18 x 7.2 mm depth
Cut: Free-form cabochon
Color: As shown
Treatment: None guaranteed 100% natural!
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Gemstone Details
About Thompsonite
Thompsonite is a zeolite group mineral composed primarily of hydrated calcium sodium aluminosilicate.
Specifications & Notes
Origin: United States (Minnesota)
Carat Weight: 16.00 ct
Dimensions: 19.7 x 18 x 7.2 mm
Clarity: VS
Cut: Cabochon
Color: As shown
Treatment: None – natural color
Gemologist Notes:
This 16.00 carat thompsonite originates from Minnesota, in the Lake Superior region, a well-known source of this zeolite mineral. Minnesota thompsonite is typically encountered in nodular form and is commonly fashioned into cabochons to display internal radial structures and color patterning. This example has been polished as a cabochon and displays natural color. No treatments are present.
Each gemstone is individually photographed and described.
You will receive the exact stone shown.
Shipping, Care & Authenticity
• Ships securely packaged and fully insured.
• Natural gemstone – no dyes or coatings unless stated.
• Avoid harsh chemicals and ultrasonic cleaners.
• Colors may vary slightly due to lighting and screen settings.