Montana Yellow Sapphire
$175.00
Item number:
1
Montana Yellow Sapphire 5 x 4 Oval .42 CT
Montana yellow sapphires are highly prized, natural corundum gemstones known for their unique terroir-driven colors, which range from pale lemon to deep golden-yellow. Celebrated for their rich "Big Sky" warmth, they are an increasingly popular, eco-friendly choice for bespoke engagement rings and fine jewelry.
Key Characteristics & Value
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- Color Profile: Unlike heavily saturated, canary-yellow sapphires found in tropical locales, Montana yellows possess a distinct, refined glow. They often feature subtle secondary undertones of green, teal, or orange.
- Durability: Ranking a 9 on the Mohs hardness scale, these gems are highly scratch-resistant and ideal for daily wear in rings.
- Pricing: Prices vary by size, clarity, and treatment. A 0.5-carat stone typically ranges from $400 to $700, while a 1 to 1.5-carat sapphire commands between $1,500 and $2,500 depending on precision cut and origin.
Origins
The majority of yellow Montana sapphires are sourced from the alluvial gravel deposits of the Missouri River (near Helena), Rock Creek (near Philipsburg), and Dry Cottonwood Creek. Mining in these areas is strictly regulated, yielding a highly traceable, ethically-sourced gemstone.
Treatments
While many Montana sapphires are completely unheated (100% natural), some undergo standard heat-treatment to stabilize their color and improve clarity. Heat-treated stones offer brilliant color uniformity, whereas collectors prize untreated stones for their natural character and inclusions.