1. By: Amelia Morkve

2. 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

3. Chemical composition and
uses
 Chemical 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

4. Where it is found and Crystalline structure
It is found in a few
places: Ireland
Denmark
Frankfurt
Guatemala
South Australia
Hungary
Mexico
Crystalline structure
Amorphous-no crystals
México
Frankfurt
South
Australia

5. Types of Opal
 White
 Fire
 Black
 Jelly
 Boulder
 Rough
Boulder
opal
 Chrystal
Chrystal
opal
White
opal
Jelly opal