Tanzanite Ring The 18KTT Gold "Couture" Tanzanite & Diamond Ring is a stunning piece of jewelry that exudes elegance and sophistication. The ring features a 4.57ct cushion cut fine tanzanite that is set in 18kt yellow gold double prongs. The tanzanite has been... MSRP: Was: $15,000.00 Now: $9,500.00 Add to Cart