mineral
Ruby and Diamond Heart Pendant
Corundum (Al2O3) and Diamond (C)
AI-generated identification · may be incorrectRuby: Hardness 9, red color, vitreous luster, trigonal system. Diamond: Hardness 10, colorless, adamantine luster, cubic system.
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Physical properties
Ruby: Hardness 9, red color, vitreous luster, trigonal system. Diamond: Hardness 10, colorless, adamantine luster, cubic system.
Formation & geological history
Rubies form in metamorphic rocks like marble or basaltic igneous rocks through high pressure. Diamonds form deep in the mantle under extreme heat and pressure, brought to the surface by kimberlite pipes.
Uses & applications
Primarily used for high-end jewelry and personal adornment; diamonds are also used in industrial cutting/drilling.
Geological facts
Ruby is the red variety of the mineral corundum; every other color is sapphire. Natural diamonds are billions of years old.
Field identification & locations
Identify rubies by their intense red fluorescence and hardness; identify diamonds by their unparalleled brilliance and scratch resistance. Common in high-jewelry boutiques.
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