SAPPHIRE

 

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Sapphire and Ruby comprise more than half of all Gemstones sold worldwide. Sapphire's popularity is not based on color alone.  Its hardness of 9 places it next to Diamond (10), making it an excellent choice for jewelry worn daily.  It is frequently featured in engagement rings. .Sapphire is the usual name for transparent corundum. On this page, we will often use the word corundum to include sapphire and Ruby, because of their shared characteristics.Corundum can be colourless, red, pink, blue, black, brown, orange, yellow, green, indigo, violet, or mauve. Red corundum and most pink corundum is called ruby, blue corundum is called sapphire, and other colours are also called sapphire, usually with the colour specified as a prefix to the word sapphire, for example, yellow sapphire.

 

Healing Powers

Sapphire has been credited with profound powers such as the ability to protect the wearer against poisons and evil spirits.

 


TECHNICAL DETAILS

Chemical Composition and Name SiO2 - Silicon Dioxide
Hardness 7
Refractive Index 1.544 - 1.553
Bi - refrigence 0.009
Specific Gravity 2.65 - 2.66
Crystalline System Trigonal (Rhombohedral)
Optic Sign Positive
Other Optical Properties

 

Uniaxial

 

 

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 Sapphire

 Stocks)

 

 

SOURCES FOR THIS GEMSTONE

Australia, Thailand, Colombia, Kampuchea (Cambodia), Kenya, ,Srilanka, Tanzania and Montana USA.

TREATMENTS

Almost all (99%) Sapphire is routinely treated with "heat" to enhance and stabilize the color. 

The typical heat enhancement procedure performed on Sapphire from Sri Lanka (Ceylon) normally refers to the lower temperature wood heat method, and the typical heat enhancement procedure performed on Sapphire from Burma, and other countries in that region, usually refers to the higher temperature furnace fired method that is performed at another location, both heating methods have been accepted trade practices for generations.

CARE

It is usually safe to clean Sapphire in an Ultrasonic cleaner, but risky to use a steamer. We recommend ionic cleaners and/or warm, soapy water and a soft brush as the best way to clean Sapphire jewelry.

 

 

 

 

 

 
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