Vietnamese 12ctw Mine-Cut Diamond, 15ct Near Flawless Tourmaline Solid White/Yellow Gold W/Silver 19th C. Princess Tiara - This stunning piece is made of solid yellow and white gold. The bands that hold the tiara in place are made of solid silver. The piece boasts approximately 12ctw genuine mine-cut diamonds that range from 0.80ct-0.01ct each. The center of the tiara has a stunning approximate 15ct near flawless lime green cushion-cut tourmaline. This piece is from a royal family of Vietnam that now lives in the USA. This piece is museum quality, as it is the only one in the world that is known to exist. The family will not be providing provenance, as they still have familiy living in Vietnam and they wish to remain private. Measures: 4" W x 3.25" L x 5.75" (from tip of tiara to back end). The piece weighs: 76.1 Grams. This piece is quite unique, as it follows a very popular 19th C. French design, because it is a versatile piece. The piece can be worn as a tiara, but the centerpiece of the tiara has tulip screw backs covered with diamonds in the front, and can be removed to wear as a royal pendant on a chain. This piece truly belongs in a museum.