Shop All Jewelry By Treatment (Unheat vs Heated) Categories: All Pre-owned Luxury Brand Jewelry Harry Winston Cartier Tiffany Graff Other Brands Color Stones, Diamonds (Unbranded) By Stone Type (Color Stones, Diamonds) Lab-grown Diamonds Natural Diamonds Color Stones By Treatment (Unheat vs Heated) Unheat Heated All / Color Stones, Diamonds (Unbranded) / By Treatment (Unheat vs Heated) All Pre-owned Luxury Brand Jewelry Color Stones, Diamonds (Unbranded) By Stone Type (Color Stones, Diamonds) By Treatment (Unheat vs Heated) Unheat Heated 24ct Sapphire Necklace with Diamonds, Burma Unheated, GUILD Certified $258,888.00 Add To Cart Added! 'Royal Blue' 6ct Sapphire Ring with Diamonds, Sri Lanka Unheated, GRS Certified Sale Price: $59,888.00 Original Price: $63,888.00 Sale Add To Cart Added! 'Royal Blue' 1.09ct Sapphire (Heated, Sri Lanka) Tiara Diamond Ring, US 5, AU750 $2,499.00 Add To Cart Added! 'Royal Blue' 10ct Sapphire Ring, Sri Lanka Unheat, with GRS Certification $175,000.00 Sold Out Sold Out Added!