Search results
Results from the WOW.Com Content Network
An uncut/rough yellow sapphire found at the Spokane Sapphire Mine near Helena, Montana "Yogo sapphire" is the preferred term for gems found in the Yogo Gulch, whereas "Montana sapphire" generally refers to gems found in other Montana locations. [18] More gem-quality sapphires are produced in Montana than anywhere else in North America. [18]
Peridot (/ ˈ p ɛ r ɪ ˌ d ɒ t,-ˌ d oʊ / PERR-ih-dot, -doh), sometimes called chrysolite, is a yellow-green transparent variety of olivine.Peridot is one of the few gemstones that occur in only one color.
At the time, Jeffrey E. Post, the museum's gem curator, said that this was the largest diamond on display in the U.S. The famous Hope Diamond is only 45.5 carats, which is about one-third the mass of the Tiffany Yellow Diamond. [5] The diamond is known to have been worn by only four women during its lifetime.
An uncut, rough yellow sapphire found at the Spokane Sapphire Mine near Helena, Montana. Sapphire is one of the two gem-varieties of corundum, the other being ruby (defined as corundum in a shade of red). Although blue is the best-known sapphire color, it occurs in other colors, including gray and black, and also can be colorless.
[citation needed] The golden yellow color is attributed to Fe 3+ ions. [32] [40] Both golden beryl and heliodor are used as gems. Probably the largest cut golden beryl is the flawless 2,054-carat (410.8 g) stone on display in the Hall of Gems, Washington, D.C., United States. [44]
Get AOL Mail for FREE! Manage your email like never before with travel, photo & document views. Personalize your inbox with themes & tabs. You've Got Mail!
Ellendale quickly became known as the largest single source of Fancy Yellow diamonds in the world. Whereas most diamond mines produce less than 1% Fancy Yellow stones, Ellendale's production was approximately 12%. In 2009 Tiffany & Co. launched its Yellow Diamond collection in Japan in April 2010, followed by a U.S. debut later that year.
Wulfenite is a lead molybdate mineral with the formula Pb Mo O 4.It often occurs as thin tabular crystals with a bright orange-red to yellow-orange color, sometimes brown, although the color can be highly variable.