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The majority are from the Rock Creek deposit. The largest one, however, is a blue Yogo used for the butterfly's head. Other sapphires used included yellow, purple, pink, and orange gems. Crevoshay completed the brooch in 2007; she and Kane presented the finished brooch to Smithsonian curator Jeffrey Post on May 7, 2007, in Washington, DC. [94] [95]
Various gem colors of Oregon sunstone In the early 2000s, a new variety of red or green gemstone resembling sunstone and known as "Andesine" appeared in the gem market. After much controversy and debate, most of these gemstones, allegedly sourced from China, were subsequently discovered to have been artificially colored by a copper diffusion ...
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.
A rough specimen of bloodstone. Heliotropes (from Ancient Greek ἥλιος (hḗlios) 'sun' and τρέπειν (trépein) 'to turn') (also called ematille, Indian bloodstones, or simply bloodstones) are aggregate minerals, and cryptocrystalline mixture of quartz that occurs mostly as jasper or sometimes as chalcedony (translucent).
Dark and Darker is a first-person hybrid between a dungeon crawler and a role-playing game with a dark medieval fantasy setting. [4] The game blends elements from role-playing systems such as Dungeons & Dragons, [5] roguelikes, and multiplayer video games such as DayZ, and has been described [by whom?] as belonging to the "extraction" subgenre of battle royales.
Chrysoprase, chrysophrase or chrysoprasus is a gemstone variety of chalcedony (a cryptocrystalline form of silica) that contains small quantities of nickel.Its color is normally apple-green, but varies from turquoise-like cyan to deep green.
Jacinth (/ ˈ dʒ æ s ɪ n θ /, [1] / ˈ dʒ eɪ s ɪ n θ /) [2] or hyacinth (/ ˈ h aɪ. ə s ɪ n θ /) [3] is a yellow-red to red-brown variety of zircon used as a gemstone. [ 4 ] In Exodus 28:19, one of the precious stones set into the hoshen (the breastplate worn by the High Priest of Israel ) is called, in Hebrew, leshem , which is ...
The clarity, or purity, of a diamond refers to internal inclusions of the diamond, and is one of the 4-Cs in determining a diamond's value.Common inclusions that appear inside diamonds are black carbon spots and small cracks, commonly referred to as fractures or "feathers", due to their feathery whitish appearance when viewed from above or through the side.