Diamond

Diamond

Chemical Formula:  C

Chemical Composition:  Carbon

Class:  Elements

Crystal System:  Cubic (Isometeric)

Crystal Habit:  Octahedral, dodecahedral

Hardness:  10

Density/Specific Gravity:  3.50 — 3.53

Refractive Index:  2.417 — 2.419

Double Refraction:  Anomalous

Absorption Spectra – Natural Diamond 
Colourless to yellow:
  478, 465, 451, 435, 423, 415, 401, 390
Yellowish brown:  576, 569, 564, 558, 550, 548, 523, 493, 480, 460,
Brown-greenish:  537, 504, 498
(ref: p46 “Gemstones of the World”, Walter Schumann)

Colour:  Of streak white, colourless, white, brown, grey, yellow, blue, pink,

Pleochroism:  None

Transparency:  Transparent, translucent, opaque

Lustre:  Adamantine  

Luminescence:  Approximately 30{049d3018651de2a7e433ffb13acdc36a21b9ea4fa995a70edf1ffcc6a2970dff}

Cleavage:  Perfect octahedral

Fracture:  Conchoidal 

Dispersion:  0.044

Healing Stone:  Toenails, blisters, testicles, varicose veins, sciatica

Assigned Planet:  Neptune

Additional Zodiac Stone:  Cancer, Leo, Libra, Pisces

Gemstone of the Month:  April

Gemstone of the Week:  Saturday

Main Sources:  Australia, Botswana, Republic of Congo, India, Namibia, Russia, Sierra Leone, South Africa, Zimbabwe ……

Notes:  The hardest natural material and the most efficient heat conductor

Most Brilliant Diamond Cut
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