Catherine Bell (I) Catherine was born in London, but moved to California with her Iranian mother at age 2. Her mother still acts as her personal assistant. As a child, she acted in various TV adverts. She went to UCLA to study biology, but dropped out to become a model in Japan.
When gemstones are identified by category, the following categories may apply: 1  Diamonds â considered the most precious stone in the world. 2  Corundum â contains gemstones like sapphires and rubies. 3  Chrysoberyl â alexandrite and catâs eyes are two common stones of this type.here are other ways to evaluate types of gemstones. People may classify them by hardness on the Mohs scale, by color, by rarity, or by popularity. What is really most important in considering different types is how they appeal and how well they will hold up when used in certain ways.
Gemstones: loose gem stones, tumbled polished gemstones. These gem stones are the best quality available. All stones are natural and not synthetic (produced in the laboratory). None are dyed or heated for color enhancement. Instructions for cleaning are included with your order. Natural gemstones are useful for healing or meditation, as the cost of tumbled stones is very affordable.