Classification and Grading

Classification and Grading

Opal Fossils

Opal fossils are opals formed in the cavity left underground by an animal that has perished and left the shape of its former self to … Read more

Matrix Opal

Matrix opal is a treated opal that comes from in Australia. It is defined as opal in host rock. The main field that produces this … Read more

Solid Black Opal

Solid black opal is found mainly in Lightning Ridge in Australia. Black opal is a dark-bodied or a dark tint throughout the opal, making the … Read more

Jelly Opal

Jelly opal is an opal that has a jelly look to it. It is just like crystal opal but the opal color is a little … Read more

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