Featured in this lot is this tanzanite, blue and green opal, 18k yellow gold ring. The ring shows 18k yellow gold construction with a lovely five stone setting to this simple but elegant band setting and a gold weight of 2.40GM. The ring shows a center stone of round cut brilliant tanzanite with a weight of 0.18 carats. The tanzanite is a very rare precious gemstone found only in the Usumburu Mountains that border the Umba Valley of northern Tanzania. The center stone is bordered by four green blue opal stones. The ring shows the Crown Jewel, INC. hallmark on the inside band of the ring with an 18k gold stamp on the opposite side. The measurements of this ring are 1" x 3/4" x 1/8" with a ring size of US 7.