
1) Beautiful stone 2) Certain red ore 3) Cut mineral 4) Decorative stone 5) Gemstone 6) Gemstone mineral 7) Jewel 8) Jewel mineral 9) Luminescent mineral 10) Mineral 11) Mineral gemstone 12) Mineral jewel 13) Oxide mineral 14) Polished mineral 15) Polished jewel 16) Precious gemstone 17) Prized stone
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https://www.crosswordclues.com/clue/cuprite

1) Ore
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https://www.crosswordclues.com/clue/cuprite

Cuprite is an oxide mineral composed of copper(I) oxide Cu2O, and is a minor ore of copper. Its dark crystals with red internal reflections are in the isometric system hexoctahedral class, appearing as cubic, octahedral, or dodecahedral forms, or in combinations. Penetration twins frequently occur. In spite of its nice color it is rarely used for ...
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http://en.wikipedia.org/wiki/Cuprite

• (n.) The red oxide of copper; red copper; an important ore of copper, occurring massive and in isometric crystals.
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http://thinkexist.com/dictionary/meaning/cuprite/

soft, heavy, red oxide mineral (Cu2O) that is an important ore of copper. A secondary mineral often formed by the weathering of copper sulfide ...
Found on
http://www.britannica.com/eb/a-z/c/169
Cu'prite noun (Min.) The red oxide of copper; red copper; an important ore of copper, occurring massive and in isometric crystals.
Found on
http://www.encyclo.co.uk/webster/C/203

Cuprite is the red oxide of copper and an important ore of copper. It is found in the upper oxidized portions of copper veins and is commonly found in isometric crystal forms, and also massive. It has the formulae Cu2O and a relative hardness of 4.
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http://www.probertencyclopaedia.com/browse/HC.HTM

Copper(I) oxide
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http://www.translationdirectory.com/glossaries/glossary075.htm

[
n] - a mineral consisting of cuprous oxide that is a source of copper
Found on
http://www.webdictionary.co.uk/definition.php?query=cuprite

Copper oxide ore.
Found on
https://copperalliance.org.uk/about-copper/copper-glossary/

Copper oxide ore.
Found on
https://oldcopper.org/special_topics/glossary.php
noun a mineral consisting of cuprous oxide that is a source of copper
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https://www.encyclo.co.uk/local/20974

Ore found in crystalline form or in earthy masses. It is red to black in colour, and is often called ruby copper
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https://www.encyclo.co.uk/local/21221
(Copper Oxide) Cuprite has been a major ore of copper and is still mined in many places around the world. Of all the copper ores except for native copper, cuprite gives the greatest yield of copper per molecule since there is only one oxygen atom to every two copper atoms. As a mineral specimen, cuprite shows fine examples of we...
Found on
https://www.encyclo.co.uk/local/23719

a mineral, cuprous oxide, CuO, occurring in red crystals and brown to black granular masses: an ore of copper.
Found on
https://www.infoplease.com/dictionary/cuprite
No exact match found.