Ruby look-alikes
Corundum (Al₂O₃) with Chromium impurities
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Open the appSeveral rocks and minerals can be confused with Ruby. Below are documented look-alikes and the features that tell them apart. Never rely on a single feature. Always check multiple properties.
Similar rocks to compare
Garnet
Complex Silicate (e.g., Fe₃Al₂(SiO₄)₃ for Almandine)
Also known as: Almandine, Pyrope, Spessartine, Grossular, Andradite, Uvarovite
Red Spinel
Magnesium Aluminum Oxide (MgAl₂O₄)
Also known as: Balas Ruby
Red Tourmaline
Complex Borosilicate (e.g., Na(Li,Al)₃Al₆(BO₃)₃Si₆O₁₈(OH)₄ for Rubellite)
Also known as: Rubellite
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