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Hasil cari dari kata atau frase: oriental amethyst(0.01831 detik)
Found 1 items, similar to oriental amethyst.
English → English (gcide)
Definition: oriental amethyst
Corundum \Co*run"dum\ (k[-o]*r[u^]n"d[u^]m), n.; pl. Corundums
(k[-o]*r[u^]n"d[u^]mz). [Also corindon.] [From Hind. kurand
corundum stone.] (Min.)
The mineral alumina (Al2O3), as found native in a
crystalline state. Transparent varieties are used as
gemstones, including sapphire, which is the fine blue
variety; the oriental ruby, or red sapphire; the oriental amethyst
, or purple sapphire; and adamantine spar, the
hair-brown variety. It is the hardest substance found native,
next to the diamond.
[1913 Webster +PJC]
Note: The name corundum is sometimes restricted to the
non-transparent or coarser kinds. Emery is a
dark-colored granular variety, usually admixed with
magnetic iron ore.