Loose 1.5 Carat Demantoids

Natural demantoid garnets of 1.5 carats are exceptionally rare, representing less than 1% of all gem-quality demantoids mined. Their scarcity increases exponentially with size, making one-and-half-carat specimens particularly coveted. Most high-quality loose demantoids in this weight category come from depleting Russian deposits or limited African sources, with conflict-free origins verified through proper documentation. This rarity directly influences their value, with prices typically 30-40% higher per carat than one-carat stones.

Russian 1.5 ct demantoids typically display a more intense emerald-green color and the characteristic “horsetail” inclusions – golden bissolite needle formations – that collectors prize. African specimens often exhibit yellower green hues and rarely show horsetail inclusions. The origin significantly affects price, with Russian stones commanding 20-50% higher costs per carat. When purchasing either variety, certificates verifying natural origin and ethical sourcing ensure you’re getting a genuine precious stone worth your investment.

Demantoid garnets possess extraordinary brilliance due to their exceptional dispersion value of 0.057 (compared to diamond’s 0.044), creating more spectacular prismatic flashes. In 1.5 carat specimens, this “fire” becomes particularly noticeable, making these rare green gems appear more vibrant than equivalent diamonds under proper lighting. The high refractive index creates remarkable scintillation that colored stone enthusiasts pursue, justifying their premium cost per carat for real, untreated stones with optimal cutting.

Care for 1.5 carat demantoid jewelry by avoiding ultrasonic cleaners and harsh chemicals that might damage these precious stones. With a hardness of 6.5-7 on the Mohs scale, demantoids require more protection than diamonds or sapphires. Clean your natural demantoid using mild soap with lukewarm water and a soft brush. Store separately from harder gems to prevent scratching, ensuring your high-quality investment maintains its aesthetic appeal and value over time.