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en.wikipedia.org/wiki/Ruby

A ruby is a pink to blood-red colored gemstone, a variety of the mineral corundum (aluminium .... Rods of synthetic ruby are used to make ruby lasers and masers. The first working laser was made by Theodore H. Maiman in 1960. Maiman used  ...

www.leaf.tv/articles/what-are-rubies-used-for-today

Rubies are gemstones that are known for their red color and hexagonal shape. Large rubies are often more expensive than diamonds because naturally ...

smallbusiness.chron.com/different-uses-rubies-13484.html

Furthermore, nobles used rubies in their jewelry because they believed the gems would protect them and keep them healthy. Rubies still are some of the most ...

www.crystalvaults.com/crystal-encyclopedia/ruby

Items 1 - 12 of 28 ... It increases desire and sexual energy, and may be used to activate the kundalini. Ruby has always been associated with love, especially ...

www.jewelsforme.com/ruby-meaning

The Indians call the ruby Ratnanayaka, the lord of the gemstones. The Hindus called the ruby the king of precious stones and the leader of gems. They used to  ...

www.minerals.net/gemstone/ruby_gemstone.aspx

A unique gemstone form composed of opaque red Ruby in contrasting green Zoisite is well known from Tanzania, and is used as a minor gemstone and can be ...

meanings.crystalsandjewelry.com/ruby

Ruby has been long used as a stone to increase passion and to bring and increase romantic love. It is also said to bring integrity, devotion, and happiness to ...

geology.com/minerals/corundum.shtml

Corundum is used as a gemstone, abrasive, refractory and much more. Red corundum is a ruby, blue is a sapphire, any other color is a fancy sapphire. Synthetic ...

geology.com/gemstones/ruby-and-sapphire

Ruby and sapphire have the same chemical composition and crystal structure - they are both ... Used alone, the word "sapphire" refers only to blue corundum.

www.gemnation.com/base?processor=getPage&pageName=ruby_history

In England, it was used for coronation rings and to this day enjoys popularity among royalty. Fergie, the Duchess of York received a ruby engagement ring from ...