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

1) Niccolite
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https://www.crosswordclues.com/clue/nickeline

Nickeline or niccolite is a mineral consisting of nickel arsenide, NiAs, containing 43.9% nickel and 56.1% arsenic. Small quantities of sulfur, iron and cobalt are usually present, and sometimes the arsenic is largely replaced by antimony. This last forms an isomorphous series with breithauptite (nickel antimonide). == Etymology and history == Whe...
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http://en.wikipedia.org/wiki/Nickeline

• (n.) An alloy of nickel, a variety of German silver. • (n.) Niccolite. • (n.) An alloy of nickel, a variety of German silver. • (n.) Niccolite.
Found on
http://thinkexist.com/dictionary/meaning/nickeline/
Nick'el·ine noun 1. (Chemistry) An alloy of nickel, a variety of German silver.
2. (Min.) Niccolite.
Found on
http://www.encyclo.co.uk/webster/N/20

a usually massive, pale copper-red mineral, nickel arsenide, NiAs, with a metallic luster. Also called
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https://www.infoplease.com/dictionary/nickeline
No exact match found.