Pectolite and Emerald Physical Properties

Pectolite

Emerald

Pectolite

Emerald

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1 Physical Properties

1.1 Tenacity

Brittle

Not Available

1.2 Solubility

Not Available

1.3 Durability

Not Available

Hard

1.4 Specific Gravity

2.74-2.902.67-2.78

1 7.18

1.5 Fracture

Uneven, Gemstones (2009), Splintery

Uneven, Uneven, ConchoidalWalter Schumann, Gemstones of the world (2001)

1.6 Cleavage

Perfect on {100} and {001}

Imperfect on the [0001]

1.7 Mohs Hardness

4.5-57.5-8

2 10

1.8 Chemical Composition

Ca 2NaHSi 3O 9Ulrich Henn and Claudio C.

Be₃Al₂SiO₆

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