Gemstone of the Day for January 9th – Gypsum
Gemstone of the Day Gypsum (Color: white, colorless or gray, but can also be shades of red, brown and yellow.) Hardness: 2 Specific Gravity: 2.3 Chemistry: CaSO4-2(H2O), Hydrated...
View ArticleGemstone of the Day for February 25 is Magnetite
Gemstone of the Day Magnetite Known as the “Stone of Stability” (Color: Black) Hardness: 5.5 – 6.5 Specific Gravity: 5.1+ Chemistry: Fe3O4, Iron...
View ArticleGemstone of the Day for March 2nd is Bavenite
Gemstone of the Day Bavenite Hardness: 5.5 Specific Gravity: 2.7 Chemistry: Ca4Be2Al2Si9O26(OH)2 Class: Silicates Crystallography:...
View ArticleCrystal of the Day for March 16th is Ralsonite
Crystal of the Day Ralsonite (Colorless, White) Named for J. Grier Ralston (1851-1880 CE) of Norristown, Pennsylvania, USA, who first observed the mineral. Hardness: 4.5 Specific Gravity: 2.5...
View ArticleGemstone of the Day for March 23 is Erythrite
Gemstone of the Day Erythrite (Color: deep red-purple to lighter pinks in massive and thin crust forms) Hardness: 1.5 – 2.5 Specific Gravity: approximately 3.1 Chemistry: Co3(AsO4)2-8(H2O) , Hydrated...
View ArticleGemstone of the Day for June 14th is Raspite
Gemstone of the Day Raspite Named for Charles Rasp (1846-1907), German-Australian prospector, discoverer of the Broken Hill ore deposit. Hardness: 2.5 – 3 Specific Gravity: 8.4...
View ArticleCrystal of the Day for June 22nd is Lazulite
Crystal of the Day Lazulite (Color: dark azure-blue to a bright indigo blue) Hardness: 5.5 – 6 Specific Gravity: 3.1 Chemistry: (Mg, Fe)Al2(PO4)2(OH)2, Magnesium Iron Aluminum Phosphate Hydroxide...
View ArticleGemstone of the Day for June 30 is Moonstone
Gemstone of the Day Moonstone (Color: off-white or gray or pale shades of green, yellow or brown) Hardness: 6 Specific Gravity: 2.57 Chemistry:...
View ArticleGemstone of the Day for July 3rd is Rhodolite
Gemstone of the Day Rhodolite The name rhodolite comes from the Greek word, “rhodon”, meaning rose. Hardness: 7 – 7.5 Specific Gravity: 3.4 – 4.3...
View ArticleGemstone of the Day for September 25th is Flint
Gemstone of the Day Flint (Color: Dark brown to black siliceous nodules, usually found in chalk) Hardness: 7 Specific Gravity: 2.65 Chemistry: SiO2...
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