Pearl is an organic, white to bluish-grey colored, precious gemstone produced inside the body of a living organism called ‘Mollusc’. This gemstone holds a strong astrological significance in Vedic astrology and is worn to pacify planet Moon in the wearer’s birth chart. Western astrology suggests Pearl birthstone for those born in the month of June.
PEARL PROPERTIES
Category | Carbonate mineral, protein |
Chemical Formula | CaCO3 |
Crystal System | Orthorhombic |
Colors | White, cream, silver, grey, blue, pink, green, brown, and black |
Hardness | 2.5 – 4.5 on the Mohs scale |
Refractive Index | 1.52 – 1.69 |
Specific Gravity | 2.60 – 2.85 |
Birefringence | 0.156 |
Lustre | Pearly |
Cleavage | None |
Streak | White |
Fluorescence | White pearls – light blue to light yellow; Golden pearls – yellow-green, greenish-brown to dark brown; Black pearls – commonly pink to orange-red. |
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