Leaders of states in the U.S. which have significant mineral deposits often create a state mineral, rock, stone or gemstone to promote interest in their...

Commonwealth of Massachusetts List of Massachusetts-related topics List of U.S. state minerals, rocks, stones and gemstones Lists of United States state insignia...

be used for jewelry and are therefore often considered to be gemstones as well. Most gemstones are hard, but some softer minerals such as brazilianite...

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are classified as gemstones. Since antiquity, varieties of quartz have been the most commonly used minerals in the making of jewelry and hardstone carvings...

state dinosaur of Texas is Sauroposeidon proteles. List of U.S. state dinosaurs List of U.S. state minerals, rocks, and gemstones Lists of U.S. state...

has a binding and skin protecting function that ensures protection of the skin from external influences. List of gemstones List of minerals Schumann, Walter...

in a wide variety of colors. The name is derived from the Sinhalese tōramalli (ටෝරමල්ලි), which refers to the carnelian gemstones. Brightly colored Ceylonese...

identification of these stones, although largely speculative. The Hebrews obtained gemstones from the Middle East, India, and Egypt. At the time of the Exodus...

sulfur, lithium, talc, and zinc, among many other minerals. Gemstones include high-quality emeralds, lapis lazuli, red garnet and ruby. According to a joint...

The "myth" of Amethyste and Bacchus was invented by the French poet Remy Belleau (1528–1577). Ametrine List of minerals Specimen Ridge Minerals portal  One...

source?] Minerals portal Chrysoberyl – Mineral or gemstone of beryllium aluminate List of minerals – List of minerals with Wikipedia articles List of emeralds...

collectors and occasionally fashioned into bright, yellow-orange gemstones. Only two sources of gem-quality material are known: the Pamir Mountains of Tajikistan...

with prasiolite. List of minerals List of minerals named after people Sunstone (medieval) Warr, L.N. (2021). "IMA–CNMNC approved mineral symbols". Mineralogical...

Museum of Rocks and Minerals is a non-profit museum in Hillsboro, Oregon, United States. Located just north of the Sunset Highway on the northern edge of Hillsboro...

on New Minerals and Mineral Names (CNMMN) adopted the name titanite and "discredited" the name sphene as of 1982, although commonly papers and books initially...

of their abundance or aesthetic value in terms of collecting. Commercially valuable minerals and rocks, other than gemstones, metal ores, or mineral fuels...

Northwest Museum of Rocks and Minerals in Hillsboro, Oregon, U.S. List of minerals Manganoan calcite Warr, L.N. (2021). "IMA–CNMNC approved mineral symbols"....

Murphy, Jack; Modreski, Peter (2002-08-01). "A Tour of Colorado Gemstone Localities". Rocks & Minerals. 77 (4): 218–238. Bibcode:2002RoMin..77..218M. doi:10...

diamonds are cut and polished in preparation for sale as gemstones ('industrial' stones are regarded as a by-product of the gemstone market; they are...

since 1983. List of public art at the Indiana Statehouse List of U.S. state minerals, rocks, stones and gemstones List of Indiana state symbols Robert...

cabochon-cut. Chatoyant stones are known as cat's-eye apatite, transparent green stones are known as asparagus stone, and blue stones have been called moroxite...

silica-rich of volcanic rocks. It is generally glassy or fine-grained (aphanitic) in texture, but may be porphyritic, containing larger mineral crystals...

an island state of the United States, in the Pacific Ocean about 2,000 miles (3,200 km) southwest of the U.S. mainland. It is the only state not on the...

valued as gemstones and even referred to as chocolate diamonds. A significant portion of the output of Australian diamond mines is brown stones. There are...

special collection on gems and minerals including rare books on gemology, the folklore of gemstones through history, lapidary arts and archival gem trade records...

of precious opal. Triplet opals tend to have a more artificial appearance and are not classed as precious gemstones, but rather "composite" gemstones...

officer and aviator, gemologist, gem carver and gem faceter, author of many books and articles on minerals and gemstones, and a bookseller and bibliographer...

the mineral form of calcium fluoride, CaF2. It belongs to the halide minerals. It crystallizes in isometric cubic habit, although octahedral and more...

precious and semi-precious minerals that are mined. These include peridot, aquamarine, topaz, ruby, emerald, rare-earth minerals bastnaesite and xenotime...