Apatite

Appearance:

Transparent; colourless, pink, yellow, green, blue or violet

Common confusions......

Beryl, topaz and tourmaline

Esoteric beliefs and associations...

With violet or purple colouring, it can aid meditational states of mind. When any hint of light blue is present, it helps with patience, contentment and happiness. Dark blue often attracts changes of circumstances and psychic ability. Green Apatite has a positive influence over matters of employment, money, growth and fertility. Yellow Apatite is known for strengthening intellect and study stamina.

Other useful information...

Apatite is extremely sensitive to acids.

Physical properties...

Chemistry	Calcium fluoro-phosphate or Calcium chloro-phosphate
System/Structure	Hexagonal (short and long columns / thick tabular with many faces)
Refractive Index	1.632 - 1.646
Specific Gravity	3.17 - 3.23
Mohs' Hardness	5.0