By: Amelia Morkve

Opal properties and special property Many colors

White streak

Hardness of 4.5

The luster is vitreous which means dull

Fracture=conchoidal

Semi-transparent

Density average is 2.09

Only special property=slight glow under UV light

Chemical composition and usesChemical formula=SiO2x nH2O

The group is silicate

White=energizes

Some have special moon and sun power

Also used for jewelry

Ornaments

Used lastly for collectables

Here is what the white opal does

Where it is found and Crystalline structureIt is found in a few

places: Ireland

Denmark

Frankfurt

Guatemala

South Australia

Hungary

Mexico

Crystalline structure Amorphous-no crystals

Frankfurt

South Australia

México

Types of OpalWhite

Fire

Black

Jelly

Boulder

Rough

Chrystal

White opal

Jelly opal

Boulder opal

Chrystal opal