Natural Sapphire — 2.91 ct, United States (Montana), Round Brilliant
Natural Sapphire — 2.91 ct, United States (Montana), Round Brilliant
Note: From the El Dorado Bar near Helena, Montana, this is a large and rare example of a beautiful American Sapphire! Montana Sapphires are moody and shift around in color depending on the light source.
Origin: Sapphire - El Dorado Bar, Montana
Weight: 2.91 Carats
Size: 8.8 x 5.2 millimeters
Clarity: Slight natural rutile needle inclusions visible under close inspection.
Cut: Round Brilliant
Color: Green
Treatment: None, guaranteed 100% natural and unheated.
Couldn't load pickup availability
Share
Gemstone Details
About Sapphire
Sapphire is the gem variety of the mineral corundum, composed of aluminum oxide and valued for its hardness and durability.
Specifications & Notes
Origin: El Dorado Bar, Montana, USA
Carat Weight: 2.91 ct
Dimensions: 8.8 × 5.2 mm
Clarity: Eye Clean
Cut: Round Brilliant
Color: Green
Treatment: None – natural color
Gemologist Notes:
This sapphire originates from the El Dorado Bar deposits near Helena, Montana, United States, part of the Missouri River sapphire district. Montana sapphires occur primarily in alluvial gravel deposits derived from weathering of corundum-bearing igneous rocks. The stone displays a green color and contains fine rutile needle inclusions observable under close inspection. No evidence of heat treatment is present. Montana sapphires are known for subtle color variation under different lighting conditions.
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.