Ruby

Ruby; or in the Indonesian language is often referred to as the Merah Delima or  Pomegranate stone , is red colored gemstone that can vary between pink to blood red and is one type of the mineral corundum (aluminum oxide).
While the color is mainly due to chromium.
Ruby name is derived from the Greek word "ruber" meaning red.
If in Indonesia the name Merah delima. Origin said Dario pomegranate red inside.
Natural ruby ​​is very rare but can be fabricated artificial ruby ​​with little cost.
 Ruby is one equivalent sapphire precious stone, Emerald and Diamond.

Ruby stone price is determined by:
- Color, the most lustrous red color can be extremely valuable.
- Clarity of the more lucid agate, precious semakim expensive
In ancient times Ruby is used as a treatment alternative for the antidote to prevent people from plague. (Source Brewer'S Dictionary)

Ruby issued a red light when it is placed in the water, but does not necessarily change the water become red, the actual fact that water appears red with the reflection of light emanating from the ruby. being the water remains colorless clear
Often the test of authenticity and power of red light propagation by putting a glass of water and then inserted stones Ruby, then placed another glass of water level, water appears digelas Will others also red.

Pink Ruby