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Blue Stones

Gemstones and decorative stones found in blue, from famous precious stones to rare collector finds.

Precious

Diamond

Diamond (carbon) · Hardness 10 Uncommon
Precious

Sapphire

Corundum · Hardness 9 Rare
Semi-Precious

Tanzanite

Zoisite · Hardness 6–7 Rare
Semi-Precious

Topaz

Topaz · Hardness 8 Common