Search results
Results from the WOW.Com Content Network
Main chrysoberyl producing countries. The mineral or gemstone chrysoberyl is an aluminate of beryllium with the formula Be Al 2 O 4. [5] [6] The name chrysoberyl is derived from the Greek words χρυσός chrysos and βήρυλλος beryllos, meaning "a gold-white spar".
Peridot is one of the few gemstones that occur in only one color: an olive-green. The intensity and tint of the green, however, depends on the percentage of iron in the crystal structure, so the color of individual peridot gems can vary from yellow, to olive, to brownish-green. In rare cases, peridot may have a medium-dark toned, pure green ...
A number of individual gemstones are famous in their own right, ... American Golden Topaz, the largest cut yellow topaz, weighing nearly 23,000 carats (4.6 kg).
This is a list of gemstones, organized by species and types. Minerals. There are over 300 types of minerals that have been used as gemstones. Such as: A–B
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.
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 often ...
Taaffeite (/ ˈ t ɑː f aɪ t /; BeMgAl 4 O 8) is a mineral, named after its discoverer Richard Taaffe (1898–1967) who found the first sample, a cut and polished gem, in October 1945 in a jeweler's shop in Dublin, Ireland. [4] [5] As such, it is the only gemstone to have
Spodumene is a pyroxene mineral consisting of lithium aluminium inosilicate, Li Al(Si O 3) 2, and is a commercially important source of lithium.It occurs as colorless to yellowish, purplish, or lilac kunzite (see below), yellowish-green or emerald-green hiddenite, prismatic crystals, often of great size.