
Ruby vs Sapphire: Why They Are the Same Gem, and Where the Line Between Them Actually Falls
Ruby and sapphire are not cousins or rivals. They are the exact same mineral, corundum, separated by nothing more than colour and a naming line the trade draws by hand. Here is what that means for hardness, price, and buying, plus the genuinely blurry border where a pink sapphire becomes a ruby, and where emerald fits into the ruby vs sapphire vs emerald question.
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