[DOC] [TLE] Gemstone - Wikipedia [PAR] A gemstone is a piece of mineral crystal which, in cut and polished form, is used 
to make ... For example, diamonds are made of carbon (C) and rubies of 
aluminium oxide (Al 2O 3). Next, many gems are crystals which are classified by 
their... [DOC] [TLE] Carbon Gemstones and Minerals | Gem5.com [PAR] The following is a list of Carbon gems and minerals listed in our database. ... 
white translucent to opaque variety of crystalline quartz of somewhat greasy 
luster. [DOC] [TLE] A Guide to Gem Classification - International Gem Society [PAR] Precious and Semiprecious Gems; Diamonds and Colored Stones; Natural, 
Synthetic, and Imitation Gems; Organic and Inorganic Gems; Crystalline and .... 
Diamond and graphite both have the same chemical makeup: pure carbon. So, 
what... [DOC] [TLE] Mineral gem stones - All-Color-Gem-Stones.com [PAR] minerals and gem stones What makes a gem a mineral stone! crystals and ... 
Crystalline, pure carbon, and the hardest substance in nature, this gem is the... [DOC] [TLE] Rocks Printable Crossword  Games  Surfnetkids [PAR] Very hard and very precious stone made of crystalline carbon 7. Lustrous gem ... 
Ornament of precious metal often set with stones and worn as an accessory 10. [DOC] [TLE] Geology of Gems [PAR] Gemology is the study of gems and precious stones, both natural and artificial (
synthetic). ... Gems are crystalline minerals that occur naturally, or in some 
examples can .... are iron, copper, silver, gold, hydrogen, carbon, nitrogen, and 
oxygen. [DOC] [TLE] Crystals and Gemstones - Crystalinks [PAR] The word once referred particularly to quartz, or "rock crystal". ... Gemstones -- A 
gemstone or gem, also called a precious or semi-precious stone, is a piece of ..... 
Diamond is the allotrope of carbon where the carbon atoms are arranged in an... [DOC] [TLE] Geol. 115 Physical Properites of Gemstones - Gemology Course [PAR] Properties of Gemstones: There are two sets of characteristics possessed by 
every ... Crystalline gems have a specific chemical formula, and a well defined, 
highly ..... Diamond crystals have each carbon atom bonded tightly to four others
... [DOC] [TLE] precious minerals - niscair [PAR] Sanskrit and Hira in Hindi. Diamond is a transparent crystal of tetrahedrally 
bonded carbon atoms. Diamonds have been known and treasured as gemstones
... [DOC] [TLE] Transparent gem - definition of transparent gem by The Free ... [PAR] Noun 1. transparent gem - a gemstone having the property of transmitting light ... 
adamant, diamond - very hard native crystalline carbon valued as a gem. [DOC] [TLE] Gemstone - New World Encyclopedia [PAR] A gemstone is a mineral, rock, or petrified organic matter that, when cut or faceted 
and polished, ... Diamonds, however, are a crystalline form of carbon (C). [DOC] [TLE] NOVA - Official Website | A Primer of Gemstones - PBS [PAR] Feb 1, 2000 ... Here, see 20 of the world's most prized gemstones, together with the properties 
that experts use to ... Chemical Composition: carbon ... The largest gem-quality 
emerald crystal, found in Colombia's Cruces Mine in 1969,... [DOC] [TLE] BBC - Earth - Ten crystals with weird properties that look like magic [PAR] Jun 22, 2015 ... The identity of the stone stumped scholars for centuries, but in 2011 ... in a 
Finnish meteorite in 2010, put the precious stone to shame. ... In Haver, the 
researchers found crystalline carbon arranged in a rhombohedral lattice. [DOC] [TLE] gem - Dictionary Definition : Vocabulary.com [PAR] A gem is a precious or semi-precious stone, or a jewel. A silversmith might ... n a 
crystalline rock that can be cut and polished for jewelry. he had the gem set in... [DOC] [TLE] Uncut diamonds. Uncut diamonds. Diamonds are a hard crystalline ... [PAR] Diamonds are a hard crystalline form of carbon. ... These uncut diamonds are 
from the Russian State Precious Metals and Gemstones Collection Fund, part of 
the Russian ... See more about Uncut Diamond, Diamonds and Precious Metals. [DOC] [TLE] Amethyst Galleries - The Gemstone Minerals -

Question: This precious stone is crystalline carbon
Answer: Diamond