Kudwal Gems Lab

Ruby-मानक (सूर्य देव रत्न)

1. Ruling Planet – Sun
2. Color – Red
3. Chemical formula – Al2O3-Red
4. Luster – Vitreous
5. Crystal – Trigonal
6. Gravity – 3.98 Approx.
7. Refraction – 1.762 – 1770

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