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Saturday, September 29, 2007

MOISSANITE AND 4 NATURAL JEWELS

BEAUTY:

STONE

1. Brilliance (relative index)

2. Fire (Dispersion)

3. Luster

Moissanite

2.65 – 2.69

0.104

20.4%

Diamond

2.42

0.044

17.2%

Ruby

1.77

0.018

7.4%

Sapphire

1.77

0.018

7.4%

Emerald

1.58

0.014

4.8%


DURABILITY:

STONE

1. Hardness (Mohs)

2. Toughness

Moissanite

9.25

Excellent

Diamond

10

Excellent*

Ruby

9

Excellent**

Sapphire

9

Excellent**

Emerald

7.5

Good to poor

*except good in cleavege direction
**except twinned stones


SPECIFIC GRAVITY:

STONE

SPECIFIC GRAVITY

Moissanite

3.21

Diamond

3.52

Ruby

4.00

Sapphire

4.00

Emerald

2.72

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