[DOC] [TLE] How are emeralds formed? - UCSB Science Line - University of ... [PAR] Emerald like many other gemstones such as ruby, sapphire owe their color to ... 
The green color of Emerald is due to traces of Chromium present in them. ... are 
just right in these veins and the cool down, the emerald crystals start to form. ... 
beryl (such as aquamarine) by containing small amounts of the element 
chromium. [DOC] [TLE] Color - Geocities [PAR] Even tiny amounts of these elements can deeply color minerals. ... owe their color 
to radioactivity which distorts the crystal the crystal lattice and ... Cobalt gives 
erythrite its violet-red color, calcite a pretty pink color and ... The hyacinth orange-
red of crocoite and the emerald green of uvarovite are both produced by 
chromium. [DOC] [TLE] World's largest emerald up for auction in kelowna - Jewelry ... [PAR] If the Kelowna stone is green beryl with a little V and Cr thrown in, what is the 
problem? ... composition, it is trace elements that cause the color, the chemical ... 
(2) The proportionate amount of that mineral in the emerald as rock; ... The 
presence of small ... generally getting there at the same time as the crystal is 
grown [DOC] [TLE] Green Emerald | Causes of Color - Webexhibits [PAR] The emerald is a regular crystal of beryl that also contains chromium as an 
impurity. ... resulting in a change from the red color of ruby to the green color of 
emerald. ... In losing its energy again, the Cr3+ must pass through the state 
labeled 2E ... When small amounts of transition metals provide color in otherwise 
colorless... [DOC] [TLE] * Chromium (Jewelry) - Definition,meaning - Online Encyclopedia [PAR] Emerald's precious green color is caused by small amounts of chromium and ... 
Orange Sapphire owes its color to the additional trace elements of chromium and 
iron in its ... If the trace element titanium is also included in the crystal structure, 
the ... Chrome Tourmaline is colored by chromium resulting in a beautiful green... [DOC] [TLE] Emerald - International Colored Gemstone [PAR] They have the most beautiful, most intense and most radiant green that can 
possibly ... The lively luminosity of its colour makes the emerald a unique 
gemstone. ... The colours do not occur until traces of some other element are 
added. ... unique gem: here we see small or large fissures; here the sparkle of a 
mini-crystal or a... [DOC] [TLE] Gem Stones of the United States - USGS Publications Warehouse [PAR] Gem stones are distinguished by their, physical properties: color, crystal ..... mine, 
about a dozen emerald crystals of good grass-green color, associated with... [DOC] [TLE] COLORED GEMSTONES A triumph of nature [PAR] The color of a gemstone is determined by its chemical composition and /or 
crystalline structure. If minuscule particles of trace elements become trapped 
inside the crystal .... The name emerald is Persian in origin and means green 
stone. .... was discovered, a stone that owes its unusual color to the presence of 
chromium. [DOC] [TLE] Gemstone News and Local Color from Tefilo Otoni: Do you love ... [PAR] Jun 22, 2012 ... The butterfly brooches only represent a third of their entire jewelry ... (BaTiSi3O9), 
benitoite is a rare mineral, crystals large enough to be cut ... the color is caused 
by small amounts of the element. chromium. ... with emerald, the green variety of 
bery, which also owes its color to .... S!ooooooo beautiful, isn't it. [DOC] [TLE] Gemstone and Jewelry Glossary and Terms - Jewelry Television [PAR] Its shell, which is valued by jewelry manufacturers, exhibits colorful, .... It can be 
found in a wide range of colors, but is better known for its blue to green varieties. 
..... Diamond is the only gemstone composed of a single element  carbon. ..... 
Most mineral crystals are tiny, but a few grow large enough to be cut into beautiful
... [DOC] [TLE] Properties of Stones - Genuine Ten Ten [PAR] More recent studies suggest that the blue-green color results from small 
quantities ... while the amount of iron contained in

Question: Emeralds owe their beautiful green color to tiny amounts of this element, Cr, in their crystals
Answer: chromium