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fire opal round fire opal square fire opal oval fire opal paer fire opal octagon fire opal cushion fire opal cabochon fire opal trillian

Fire Opal

Chemical Formula SiO2 & H2O

Fire Opal comes from the Opal family. Fire Opal naturally occur in nature and are not treated. Fire opal comes in a variety of colours ranging from yellow to orange to redish orange. Main sources of fire opal are Mexico and Brazil.

We can cut fire opals in calibrated sizes in several shapes such as rounds, ovals, etc in various sizes. For more information on the sizes we usually keep in calibrated sizes, please click here.

We can also cut precision cut fire opals, this is finely cut and crafted to bring the maximum brilliancy into it. This is done with the help of automated machines and skilled labour. For your demands in precision cut, please contact us for more information.

We can accomodate pairs, layouts and single unique fire opals. Also perfected is the art of special cuts or custom cuts. This is suited to fit your specifications and can be any shape and/or cut of your choice. For your requirements, please contact us.

Crystal Habit Irregular veins, masses, nodules
Crystal System Amorphous
Cleavage None
Fracture Conchoidal to uneven
Hardness (Mohs Scale) 5.5-6.5
Luster Virteous to resinous
Refractive Index 1.37-1.46
Optical properties Single refractive
Birefringence None
Pleochroism None
Streak White
Specific Gravity 1.25-2.23

 

Fire Opal - Calibrated Sizes

We make the following calibrated sizes and can even make other in-between sizes as well. For rounds, we can cut step cut and brilliant cut (diamond cut). For squares, we can cut step cut and princess cut and and special cuts such as french cut as well.

Oval
3x2
4x3
5x3
5x4
6x4
6x5
7x5
8x6
9x7
10x8
& bigger
Pear
3x2
4x3
5x3
5x4
6x4
6x5
7x5
8x6
9x7
10x8
& bigger
Round
2.0
2.5
3.0
3.5
4.0
4.5
5.0
5.5
& bigger
Square
2.0
2.5
3.0
3.5
4.0
4.5
5.0
5.5
& bigger
Marquise
4x2
5x2.5
6x3
7x3.5
8x4
9x4.5
10x5
12x6
14x7
& bigger
Baguette
4x2
5x2.5
6x3
7x3.5
Octagon
4x3
5x3
5x4
6x4
6x5
7x5
8x6
9x7
10x8
& bigger
Heart
3.0
3.5
4.0
4.5
5.0
5.5
& bigger
Trillion
2.0
2.5
3.0
3.5
4.0
4.5
5.0
5.5
& bigger
             

 

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