Sun Moon Star Crystal House (Spinel) http://www.sunmoonstar.com.hk
Chinese
Name：尖晶石 English
Name：Spinel
Chemical Composition：MgAl2O4 (Magnesium Aluminium Oxide)
Crystal System：Cubic
Hardness：7.5 - 8.0
SG：3.58 - 3.61
RI： 1.71 - 1.74 (Single Refraction)
Related Chakra： Different Colour related to different chakra；Red: Root
Locality：Burma, Sri Lanks,
Madagascar, Afhanistan, Pakistan, Brazil, Australia,
Italy, Turkey, Russia, USA
Colour：Red
Other Spinel：Pink, Orange, Blue, Green, Purple, Yellow, Brown, Black, Colourless/White and Colour Change
Optical Effect：Might show 4-rays or 6-ryas Star Effect if there's enough silk like rutile inclusions
Remarks：Its name comes from Latin "spina" (arrow), because of the shape of its rough
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Function：
1.
Eliminate sickness & negative energy.
2.
Increase communication ability.
3.
It's a kind of wealthy stone.
4.
Increase self confidence.
5.
A good stone for marriage.
General care：
1.
The gem is durable enough for everyday wear.
2.
Avoid strong heat.
3.
Cleaning: Use lukewarm plain water, mild soap and a soft brush to scrub behind the stone where dirt can collect.
The oxide spinels have a formula of the model [A][B]2O4; where [A] is commonly Fe2+, Mg2+, or Mn2+, and [B] is Fe3+, Al3+, or Cr3+.
Variety of Spinel
Description
RI
SG
Chemical Composition
Colour
1.
Magnesium Spinel
As Magnesium Alunminium Oxide, with little colouring elements.
1.71 - 1.74
3.58 - 3.61
MgAl2O4
Red,Pink,Blue,Purple,Green,Brown and Colourless
2.
Alkali-spinel
Variety of Spinel containing Na2O 1.38%, K2O 1.31%.
1.71 - 1.74
3.65 - 4.55
MgAl2O4
Dark Green
3.
Ceylonite
A ferroan spinel with Mg:Fe from 3:1 and 1:1 and little or no ferric iron.
1.77 - 1.80
3.63 - 3.90
(Mg,Fe)Al2O4
Dark Green, Gray to black
4.
Chlorospinel
A ferrian variety of Spinel containing Fe3+ next in abundance after Al.
1.77 - 1.78
3.63 - 3.90
MgAl2O4
Green
5.
Ferropicotite
A ferroan variety of spinel
1.77 - 1.78
3.60 - 4.10
MgAl2O4
Dark Gray to Black
6.
Gahnospinel
A variety of spinel rich in zinc.
1.73 - 1.79
3.65 - 4.55
(Mg,Zn)Al2O4
Light to Dark Blue, Violet or Black
7.
Iron-magnesia Spinel (Hercynite)
A ferroan variety of spinel
1.80 - 1.84
4.39
FeAl2O4
Dark Blue, Green, Yellow or Brown
8.
Magnochromite
A chromium variety of spinel
1.71 - 1.74
3.58 - 3.61
MgAl2O4
Red
9.
Chrome Spinel/Picotite
A chromium bearing, dark-green to dark-brown spinel
2.08 - 2.16
4.05 - 4.80
FeCr2O4
Dark Yellowish Brown to greenish brown
10.
Pleonaste
An intermediate variety of the Hercynite-Spinel Series, = iron-rich spinel or magnesium-rich hercynite
1.77 - 1.80
3.63 - 3.90
(Mg,Fe)Al204
Dark Green to Blue-green to black
11.
Rubicelle
Yellow to orange-red variety
1.71 - 1.74
3.60 - 4.10
MgAl2O4
Yellow, orange to Red
Address:
B26, 1/F, San Po Kong Plaza, 33 Shung Ling Street, San Po Kong,
Kowloon, HK
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