2/3ct Tanzanite Cross Pendant, Sterling Silver Crafted In Solid Sterling Silver SuperJeweler offers free shipping in the United States, Canada, the United Kingdom, Australia and almost every country. All purchases from SuperJeweler come with The SuperJeweler Lifetime Guarantee. Your SuperJeweler jewelry purchase includes a lifetime guarantee against the loss of side stones or damage to the jewelry's setting or center stone. It also includes a one-year replacement guarantee against the loss of your jewelry's center stone. All diamonds are rare, natural minerals. The semi-faceted diamonds in this item are natural. SuperJeweler's diamonds in our inexpensive jewelry are beautiful and safe to wear. The diamonds in this jewelry item are not of gem quality, contain from 0 to 16 facets. Tanzanite is part of the zoisite group of gemstones. One of the most recent gemstones discovered, tanzanite was discovered in Tanzania in 1967. The most popular color is a pretty blue, with a purplish hue. Tanzanites are heat treated to a temperature of 400-500 degrees Celsius, which eliminates brownish and yellowish tints. All tanzanites that SuperJeweler sells are heat treated to enhance the blue color.