GADOHNITE
A heavy black rare-earth mineral sometimes cut as a curiosity.
GARNET
The species and varieties of this group furnish many fine gems in a wide variety of hues; deposits widespread and some gem-quality garnets continually supplied to the market at relatively low cost; demantoids and spessartines in short supply; recently very fine rhodolite has appeared on the market from Tanzania and commands a high price in view of its beauty and the rarity of this variety in large sizes.
ALMANDITE
Many sources of facet-grade rough;  star rough    from Idaho in large  sizes;
colors from brownish-red and very dark to bright red to purplish-red of medium
intensity.
ANDRADITE
The classic variety of andradite is demantoid, noted for its beautiful intense yellow-green to emerald-green hues; rough formerly from Russia and now un¬obtainable; some roue;h from Italian alpine sources; rare.
GROSSULAR
Also known as hessonite or essonite; facet-grade material resembles the orange-red to orange hues characteristic of spessartine, for which species grossular has been confused; additionally, in colorless to very pale orange facet-grade material, and massive, resembling jade or idocrase; largest hessonites supplied by gem gravels of Ceylon, yielding cut gems to 15 ct. Softer than other garnets.
PYROPE

Invariably as small smooth-surfaced grains in eruptive rocks or surface gravels; seldom over 1-2 gm.; best color dark uniform red; to be colorful, most faceted gems should not be over 1-2 ct.
RHODOLITE
Formerly quite rare but recently available in large fine rough from Tanzania; color range medium to pale purplish-red to pale reddish-purple, almost resem¬bling some amethyst; produces fine brilliant gems.
GOETHITE
Massive, fibrous material sometimes cut into ornaments or cabochons dis¬playing bandings and weak chatoyancy; black with dark brown to yellow bandings.
Michigan    lb.    2.50
GOSHENITE,   See   BERYL GRANITE
Various types of granite and granite-like rocks have been used for ornamental objects of large size and sometimes for cabochons and tumbled gems (see UNAKITE); graphic granite displays interesting patterns of grayish quartz upon white  to  pale  tan  feldspar and has been made  into  spheres,  bookends,  etc.
Granites, various localities    lb.    .25-.75
GROSSULAR,   See   GARNET
GYPSUM
Ornamental objects made from compact varieties alabaster and satin spar, the latter chatoyant; white, pink, pale orange, pale brown, etc.; very soft but accepts a good polish; much worked in Italy into boxes, statuary, imitation fruits, etc.; accepts dye.