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Chinese Name:紅色貴珊瑚
English Name:Red Precious Coral
Chemical Composition:Precious Coral are part of the genus Corallium family of hard corals, mainly consists of Calcite (Calcium Carbonate)CaCO3
Crystal System:Amorphous, Organic Material
Hardness:3.0 - 4.0
SG:2.60 - 2.70
RI:1.486 - 1.658
Related Chakra:Heart
Locality:Mediterranean、Japan South
Colour:Red, Pink, Orange
Remarks:
Coral is secreted by animals called coral polyps.
Coral is the supporting structure for the body of the polyp, which lives in a rigid skeleton or 'cup'.
Some colonial corals build structures known as reefs, which are the accumulated supporting structures of successive generations of polyps.

 
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Functions:
1. Good for skin, hair and nails.
2. Good for bone health, especially for kids.
3. A kind of love stone.
4. Adjust & regulate menstruation.
5. Imporve Kidney/bladder problems
6. Red & pink corals are good for nervous system and heart diseases.
   
General care:
 
1. Avoid contact with perfumes, hair spay, make-up.
2. Gem can be scratched easily, so wear with caution.
3. Avoid knocks.
4. Avoid direct sunlight or heat for a long period of time.
5. Do not soak in jewellery cleaner.
6. Avoid contact with household cleaners.
7. Avoid using ultrasonic and steam cleaners.
8. Cleaning: Use lukewarm plain water and a soft brush to scrub behind the stone where dirt can collect.

Types of Coral

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Precious Coral
Precious Coral are part of the genus Corallium family of hard corals, mainly consists of Calcite (Calcium Carbonate)CaCO3
 
Colour: Red, Pink, Orange and White
Locality: Mediterranean、Japan South
Hardness: 3.0 - 4.0
SG: 2.60 - 2.70 (white & red)
RI: 1.486 - 1.658

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Black & Golden Coral
Balck and Golden Coral is formed mainly from organic material (Conchiolin/horny),contain little or none Calcium Carbonate
 
Colour: Black, Golden
Locality: the West Indies, Hawaiian Islands, Australia and in Southern waters towards Antarctica
Hardness: 2.5 - 3.5
SG: 1.37

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Soft Coral (Spongy Coral)
mainly consists of Calcite (Calcium Carbonate)CaCO3
 
Colour: Orange to Red, Blue
Locality: Indo-pacific region
Hardness: ~ 3.5 to /6
SG: ~ 2.65
RI: 1.49 - 1.66

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Fossilized Coral
Fossilized by the replacement of the coral by calcite or quartz
 
Colour: All kinds of colour
Locality: Indonesia、USA(Florida and Georgia)、Morocco
Hardness: 6.5 - 7.0
SG: 2.60 - 2.64
RI: 1.53 - 1.54
Address: B26, 1/F, San Po Kong Plaza, 33 Shung Ling Street, San Po Kong, Kowloon, HK
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