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Amethystine
The color violet to purple in gemstones.
Angle of Incidence
The angle at which a ray of light enters a stone as measured from normal.
right - QUARTZ (Amethystine Quartz)
Criffel area, Dalbeattie, Kirkcudbright.
Intergrown group of crystals. (spec: 45x40mms).
Such are the clear yellow gem spodumenes of Brazil,7 the green variety Hiddenite, or "little emerald," of North Carolina,8 and the lilac or amethystine pieces rarely found at Branchville, Connecticut.
Summer 1962, A star sapphire-blue by day, amethystine violet by night, p. 316, 2pp.
Fall 1962, A 2-½ -lb. sapphire found in Ceylon (largest recorded from Ceylon), p. 351, 1p.
The saphir merveilleux, formerly in the Hope collection, is not a typical specimen, for it is pale in colour and assumes an amethystine hue at night.
Purplish-violet varieties are sometimes referred to as "Syriam garnet," or "Pegu garnet," named after Syriam, a capital of the ancient kingdom of Pegu (Bago), in Lower Burma. Syriam garnet may also be referred to as "amethystine or oriental garnet.
 See also: Amethyst, Minerals, Mineral, Rock, Crystal
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