Natural Sunstone — 17.75 ct, United States (Oregon), Modified Oval Brilliant (GL)
Natural Sunstone — 17.75 ct, United States (Oregon), Modified Oval Brilliant (GL)
This 17.75-carat Oregon sunstone displays pronounced copper schiller typical of material from the United States. The copper platelets create strong internal reflections that affect light return and transparency. The stone is untreated. Schiller intensity varies between specimens and is a defining characteristic of copper-bearing feldspar from this locality.
Origin: Oregon
Weight: 17.75 carats
Size: 21 x 15 x 10.7 mm deep
Clarity: Heavy copper schiller inclusions that affect the light return of the gem.
Cut: USA-cut modified oval brilliant
Treatment: None guaranteed 100% natural!
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Gemstone Details
About Sunstone (Oregon Feldspar)
Oregon sunstone is a copper-bearing feldspar variety known for aventurescent platelets of native copper within the crystal structure.
Specifications & Notes
Origin: United States (Oregon)
Carat Weight: 17.75 ct
Dimensions: 21 x 15 x 10.7 mm
Clarity: VS
Cut: Modified oval brilliant
Color: As shown
Treatment: None – natural color
Gemologist Notes:
This 17.75 carat Oregon sunstone displays pronounced copper schiller typical of material from the United States. The copper platelets create strong internal reflections that affect light return and transparency. The stone is untreated. Schiller intensity varies between specimens and is a defining characteristic of copper-bearing feldspar from this locality.
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.