September 16, 2017

Agate 天然石-メノウ

English Name: Agate

German: Achat

Japanese:メノウ

French: Agate

Spanish: Ágata

Chemical Formula: SiO2 silicon dioxide (kind of Quartz)

Crystal system: Rhombohedral Microcrystalline

Hardness: 6.5–7

Luster: Waxy

Refractive index: 1.530–1.540 (Bi-refringence up to 0.004)...

March 15, 2017

 What is Chakra ?

Chakra, derives from the Sanskrit word meaning "wheel", as well as "circle" and "cycle", sometimes spelled Cakra or Cakka, is any center of "subtle body" believed to be psychic-energy centers in the esoteric traditions of India religions, like Hinduism...

March 14, 2017

In order to identify your gems or not, you have to understand the crystal structure.

What is Crystal Structure ?

In crystallography, crystal structure is a description of the ordered arrangement of atoms, ions or molecules in a crystalline material....