2.3ct oval cut blue Zircon sterling silver ring size 8. Zircon is an all natural stone with the brilliance of a Diamond. It comes in many colors. Blue Zircon is the most expensive color and the most popular. This is a 2.3ct oval cut gemstone embellished by .22ctw of round cut white Zircon. According to the Gem World Guide, the center blue stone has an approximate retail value of $600 not including the setting or other stones. *Viewing and/or pickup of jewelry only M-F 8:30 to 4:00. Description provided by the seller.