Description : What causes a star in a ruby or sapphire cabochon? What we are seeing is the hexagonal crystal structure outlined in thousands of needle-like inclusions, called rutile silk, where the light enters the inclusion and is reflected back out. Using a point light source you can see the precise shape of the 6 pointed star brilliantly highlighted. The star formation is called asterism. Ruby is a form of corundum, which is rated 9 on the Moh's scale for hardness and durability. Star rubies are believed to hold mystical properties, and promote protection for the wearer and good fortune. The Brutalist style was a free-form and organic design process that challenged the normal standards of what was considered traditional. Size 4.75 Item Number : P10750 Category : RING Brand : CF Attributes Material : 14KY gold star ruby cabochon Style : Brutalist
