Carnelian and Ulexite Physical Properties

Carnelian

Ulexite

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1 Physical Properties

1.1 Tenacity

Not Available

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

2.58-2.64

1.65-1.99

1.5 Fracture

Uneven, Splintery, Conchoidal, UnevenWalter Schumann, Gemstones of the world (2001)

UnevenAnthony et al, Uneven, UnevenAnthony et al, Uneven, Brittle, Metallic

1.6 Cleavage

Absent

{010} Perfect, {110} Perfect

1.7 Mohs Hardness

6.5-7

2-2.5

1.8 Chemical Composition

SiO₂

NaCaB 5O 6(OH) 6 · 5H 2OMichael OâDonoghue , Gems, Sixth Edition (2006)

Carnelian and Ulexite Chemical Formula

While comparing Carnelian and Ulexite physical properties, the important data you should know is its chemical composition. Since chemical formula defines the molecular structure of the crystal, most of the physical properties like color, tenacity, solubility are governed by Carnelian and Ulexite chemical formula.

Chemical formula of Carnelian- SiO₂
Chemical formula of Ulexite- NaCaB 5O 6(OH) 6 · 5H 2OMichael OâDonoghue , Gems, Sixth Edition (2006)

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Carnelian and Ulexite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Carnelian and Ulexite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Carnelian and Ulexite Optical Properties during the identification of gemstone. Specific gravity of Carnelian is 1.65-1.99 whereas that of Ulexite is 1.65-1.99.