Can you tell me everything that you know about the aquamarine crystal ?

Question

could you tell me stuff like :
A)color
B)streak
C)specific gravity
D)Hardness
E)crystal system
F)cleavage
G)fracture

Answer 1

This past summer the wife and I took a trip to NC. Spruce Pine to be precise. We went "Rock Hounding" or "Gem Mining" at place called Gem Mountain.

http://www.gemmountain.com/aquamarine.htm

While at Gem Mountain we purchased one bucket of minerals and mined at their Aquamarine mine near by.

We found some nice specimens, but one in particular stuck a nerve, The image of this Aquamarine is posted at my site, Take a look:

http://my.opera.com/TheMineralExchange/albums/showpic.dml?album=157930&picture=2347315

Ok.. so after viewing the image, Aquamarine's stats are as follows:
A) : Green-blue
B) : White
C) : 2.63-2.91
D) : 7 1/2-8
E) : Hexagonal
F) : Imperfect
G) : Conchoidal, Uneven, Brittle.

Hey Teacher?. did I pass?

Answer 2

Color: blue to greenish blue
Hardness: 7.5
Refractive index: 1.57 – 1.59
Density: 2.67 – 2.75
Chemical composition: Be3Al2(SiO3)6
Crystal structure: hexagonal
Origins: Brazil, Madagascar, Mozambique, Russia, India, Sri Lanka, China.
Aquamarine is a beryl with a hexagonal crystal structure and a chemical formula of Be3Al2Si6O18, a beryllium aluminium silicate mineral. It has a specific gravity of 2.68 to 2.74 and a Mohs hardness of from 7.5 to 8. Aquamarine typically is on the low end of the specific gravity range, normally at less than 2.7. The pink variety exhibits a high specific gravity of around 2.8. Refractive indices range around 1.57 to 1.58.

Answer 3

I know its NOT a crystal. It is a stone, its own "species" of stone, if you will