Natural Green Sinhalite from Sri Lanka

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Natural Sinhalite from Ceylon Sri Lanka – Explore the Uncommon Gem Varieties with Danu Group!

Sinhalite is rare category borate mineral with formula MgAl(BO4). This Orthorhombic Crystal  hardness​ is 6 1⁄2 – 7 according to the Mohs Hardness scale. This gemstone was first found in Sri Lanka in 1952. It was named from Sinhala – the Sanskrit name for Sri Lanka. This is also Biaxial (-) gemstone with Specific Gravity 3.475 – 3.5. also, It is a rare Gemstone.

• Crystal System : Orthorhombic

• Refractive Index : 1.665-1.712

• Luster : Vitreous

• Hardness : 6.5-7

• Fracture : Conchoidal

• Specific Gravity : 3.475-3.50

• Birefringence : 0.035-0.037

• Cleavage : None

• Luminescence : None.

• Transparency : Transparent

• Formula : MgAlBO4

• Pleochroism : Distinct: pale brown/greenish brown/dark brown.

• Optics : a = 1.665-1.676; β = 1.697; γ = 1.705-1.712. (Sri Lanka = 1.669/1.702/1.706).

• Optic Sign : Biaxial –

                  Sinhalite has colour types such as white to gray, grayish-blue or a shade of brown ranging from pale to dark and Pale pink, green, yellowish-green and brownish pink.  Sinhalite can also be found in Madagascar, Tanzania and Myanmar. Sinhalite crytals are very rare. In Sri lanka  mostly  found Elahera, Balangoda, Nivithigala, Ratnapura, Avissawella, Embilipitiya.

This gemstone encourages the person to bring positive changes in him and inspires his ideas and thoughts. Sinhalite is a mineral that is linked with “magnesium (Mg)”, “aluminum (Al)”, “boron (B)” and “oxygen (O)”. Sinhalite is a stone that represents joy in everyday life, urging the wearer to try new things.