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The hardness of gemstones is measured using the Mohs scale, which ranges from 1 (softest) to 10 (hardest). Diamond is the hardest gemstone with a rating of 10, while talc is the softest at 1. This scale helps determine a gemstone's suitability for different types of jewelry and daily wear.
Mohs scale from 1 to 10 measures gemstone hardness. Diamond is hardest (10), talc is softest (1). Determines suitability for daily wear.
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