0GADOLINITE (Yttrium Iron Beryllium Silicate)
0GAHNITE (Zinc Aluminum Oxide)
*GALENA (Group)
Sale! 2GALENA (Lead Sulfide)
*GARNET (Group)
0GASPEITE (Nickel Magnesium Iron Carbonate)
0GAYLUSSITE (Hydrated Sodium Calcium Carbonate)
*GEMSTONES (Class)
0GEODES (generally hollow sedimentary rocks)
0GERSDORFFITE (Nickel Arsenide Sulfide)
0GIBBSITE (Aluminum Hydroxide)
0GLAUBERITE (Sodium Calcium Sulfate)
0GLAUCOPHANE (Sodium Magnesium Iron Aluminum Silicate Hydroxide)
0GMELINITE (Hydrated Sodium Calcium Aluminum Silicate)
Sale! 2GOETHITE (Hydrated Iron Oxide)
0GOLD (Au)
0GOOSECREEKITE (Hydrated Calcium Aluminum Silicate)
0GORMANITE (Hydrated Iron Magnesium Aluminum Phosphate Hydroxide)
0GOSHENITE (variety of Beryl, Berylium Aluminum Silicate)
0GRAEMITE (Hydrated Copper Tellurate)
0GRANITE (an igneous rock with visible crystals)
0GRAPHITE (Carbon)
0GRATONITE (Lead Arsenic Sulfide)
0GREENOCKITE (Cadmium Sulfide)
0GROSSULAR (Calcium Aluminum Silicate)
Sale! 1GYPSUM (Hydrated Calcium Sulfate)
0GYROLITE (Hydrated Calcium Silicate Hydroxide)