>Sapphire Properties, Facts-September Birthstone

Written by sudha on March 14, 2009

>One of the hardest minerals, sapphires are durable gemstones that have been in demand since ancient times.

Sapphire Hardness
9 on the Mohs’ scale; compare to diamonds at 10 and turquoise at 5-6.

Sapphire Colors
Cornflower blue is the most popular sapphire color, but all shades of blue are found

Sapphires exist in many other colors, including yellow, colorless, black, white, orange, pink, and brown

A variety of orangish-pink sapphire is called padparadsha, which means “lotus flower.”

Sapphire Treatments
Heat treatment is commonly used to deepen sapphire color and improve clarity

Where Sapphires Are Found
Quality sapphires are found in Ceylon, Thailand, Australia, India, Burma, Africa, and Brazil.

Unusual Sapphires
Some sapphires are cut into cabochons (smooth domes) and produce a star with six rays that stretch across the sapphire’s surface.

Synthetic Sapphires
Like many other popular gemstones, sapphires can be created in a laboratory. Some synthetic sapphires are difficult to distinguish from gemstones formed in nature.

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