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Blue gemstones are admired for their beauty and durability, which varies according to their Mohs hardness. Popular blue gemstones include Blue Sapphire (9), Aquamarine (7.5–8), Tanzanite (6–6.5), Blue Topaz (8), Turquoise (5–6), Lapis Lazuli (5–5.5), and Iolite (7–7.5).

Each gemstone suits different jewelry and astrological needs. For certified, natural blue gemstones with expert assistance, GemsRoot helps you choose the right stone based on quality, durability, and purpose.

https://www.gemsroot.com/blogs/guide/blue-gemstones-with-different-mohs-hardness-levels