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Gemstone Science
Hardness vs Toughness in Gemstones: Critical Di...
Hardness and toughness are two different gemstone properties. Learn the critical difference and why both matter when choosing durable jewelry stones.
Hardness vs Toughness in Gemstones: Critical Di...
Hardness and toughness are two different gemstone properties. Learn the critical difference and why both matter when choosing durable jewelry stones.
Mohs Hardness 2–2.5: Selenite, Gypsum & Fragile...
Selenite and gypsum score just 2–2.5 on the Mohs hardness scale. Learn why they're too fragile for jewelry and how to care for these beautiful but delicate stones.
Mohs Hardness 2–2.5: Selenite, Gypsum & Fragile...
Selenite and gypsum score just 2–2.5 on the Mohs hardness scale. Learn why they're too fragile for jewelry and how to care for these beautiful but delicate stones.
Mohs Hardness 3: Calcite & Soft Stone Care Guide
Calcite scores 3 on the Mohs hardness scale. Discover its varieties, jewelry suitability, and essential care tips for this beautiful soft stone.
Mohs Hardness 3: Calcite & Soft Stone Care Guide
Calcite scores 3 on the Mohs hardness scale. Discover its varieties, jewelry suitability, and essential care tips for this beautiful soft stone.
Mohs Hardness 4: Fluorite Hardness & Jewelry Su...
Fluorite scores 4 on the Mohs hardness scale. Learn whether fluorite is suitable for jewelry, how to care for it, and why collectors prize this colorful gemstone.
Mohs Hardness 4: Fluorite Hardness & Jewelry Su...
Fluorite scores 4 on the Mohs hardness scale. Learn whether fluorite is suitable for jewelry, how to care for it, and why collectors prize this colorful gemstone.
Mohs Hardness 5 to 5.5: Apatite, Obsidian and T...
Turquoise, apatite, and obsidian at Mohs 5 to 5.5 require protective settings and gentle care. Turquoise is porous and absorbs chemicals. Apatite has vivid colors but poor toughness. Obsidian is...
Mohs Hardness 5 to 5.5: Apatite, Obsidian and T...
Turquoise, apatite, and obsidian at Mohs 5 to 5.5 require protective settings and gentle care. Turquoise is porous and absorbs chemicals. Apatite has vivid colors but poor toughness. Obsidian is...
Mohs Hardness 6 to 6.5: Feldspar, Moonstone and...
Feldspar gems including moonstone, labradorite, sunstone, and amazonite are Mohs 6 to 6.5 with two perfect cleavage directions. They require protective settings, gentle cleaning, and careful handling despite their extraordinary...
Mohs Hardness 6 to 6.5: Feldspar, Moonstone and...
Feldspar gems including moonstone, labradorite, sunstone, and amazonite are Mohs 6 to 6.5 with two perfect cleavage directions. They require protective settings, gentle cleaning, and careful handling despite their extraordinary...