demantoid


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Related to demantoid: andradite

de·man·toid

 (dĭ-măn′toid′)
n.
A transparent, green variety of garnet used as a gem.

[German, from archaic Demant, diamond, from Middle High German diemant, from Old French diamant; see diamond.]

demantoid

(dɪˈmæntɔɪd)
n
(Minerals) a bright green variety of andradite garnet
[C19: from German, from obsolete Demant diamond, from Old French diamant + -oid]

de•man•toid

(dɪˈmæn tɔɪd)

n.
a brilliant green andradite garnet, used as a gem.
[1890–95; < German, = (obsolete) Demant diamond + -oid -oid]
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.demantoid - a green andradite used as a gemstonedemantoid - a green andradite used as a gemstone
andradite - a garnet consisting of calcium iron silicate and having any color ranging from yellow and green to brown and black; used as gemstone
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References in periodicals archive ?
The gold, sapphire, demantoid garnet and enamel dolphin brooch will be auctioned in Birmingham next month.
Name 1 Carbuncle 2 K feldspar 3 Albite 4 Tektite 5 Magnetite 6 Demantoid 7 Oolitic hematite 8 Pink pyroxene 9 Idocrase 10 Black hematite 11 Biotite 12 Hornblende 13 Calcite 14 Labradorite 15 Magnesite 16 Rhodonite 17 Reniform hematite 18 Banded siliceous rocks 19 Diopside 20 Selenite 21 Alabaster 22 Anhydrite 23 Moonstone 24 Barite 25 Hypersthene Table 2: Emission lines for classification based on major elements from geological samples.
So he did what any jeweller looking to make a splash at a world's fair in the Gilded Age might: He made a bedazzled iris corsage the size of an actual iris, with a golden stem and dozens of Montana sapphires and demantoid garnets for the bud.
Dr Ilaria Adamo (Italian Gemmological Institute, Milan) reviewed the geology and gemmology--including origin determination--of demantoid sources.
Once again, though, people came back; mining and trading demantoid during a rush, it seems, did not offer the same opportunities as mining and trading sapphires in the midst of a slowdown.
Hunterview has been finding it tough going this season but his recent effort at Exeter provides plenty of hope for Kelso's Demantoid Handicap Hurdle (2.35).
The biggest draw was Victoire de Castellane's colourful large-scale rings and floral necklaces smothered in tourmalines, demantoid garnets and rubies, jewelled counterparts of John Galliano's exuberant designs for Dior.
The most valuable garnets are, in fact, a bright leaf green: demantoid garnets, which were first discovered in the Ural mountains in the 19th Century.
Stadther later presented them with the actual jewel--a 19th-century piece set with 85 green demantoid garnets and 25 diamonds.
Demantoid garnet is a rare and beautiful bright grass green sub-variety of andradite garnet.Tsavolite, is a bright green variety of grossular garnet, its colour being induced by the presence of chromium.
Roman Serov and co-authors (all from the Gemological Center, Lomonosov Moscow State University, Russia) examined the colour origin of Russian demantoid using heating experiments.