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Sapphires—the birthstone of September—are any non-red variety of the mineral corundum. The second hardest natural stone next to diamond, sapphires are an excellent choice for an engagement ring on account of their durability and broad range of colors.
Though most people think of sapphires as blue, they're available in pink, orange, yellow, green, purple, black, and colorless.
Facts about Sapphire
Hardness
9.0Mohs Scale
One of the hardest gemstones available — virtually scratch-proof under normal wear conditions. Can be safely stored alongside other stones, but may damage them as most gems are softer.
The Mohs scale rates a gem's scratch resistance from 1 (softest) to 10 (hardest). Read more about the Mohs scale and why durability isn't just about hardness.
Care Instructions
Warm, soapy water is always safe. Ultrasonic and steam cleaners are usually safe for untreated, heat-treated, and lattice diffusion treated stones. Fracture-filled, cavity-filled, or dyed material should only be cleaned with a damp cloth.
Points of Interest