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Home > Jasper > 4 Ways to Tell if jasper is Real

4 Ways to Tell if jasper is Real

"jasper" as a widely popular name is sometimes used by merchants to label various opaque materials, even if they are not geologically or mineralogically related to real jasper. It is advisable to make purchases from reputable retailers and, if possible, request a certificate from a gem testing laboratory. Here are some handy tips to help you initially discern the authenticity of jasper.

1. Check the Grainsize

Real: Real Jasper is composed of microcrystalline quartz particles invisible to the naked eye, resulting in a fine texture without apparent mineral grains.
Fake: If visible mineral grains are present, and the texture is coarse, it is not real Jasper. Examples include well-known varieties like Dalmatian Jasper (a type of aplite) and K2 Jasper (a granite).

2. Hardness Test

Real: Real Jasper cannot be scratched by a steel nail. After a period of use, real Jasper typically doesn't exhibit noticeable wear.
Fake: Most fakes have a lower hardness than real Jasper and can typically be scratched by a steel nail. After a period of use, these low-hardness fakes will show obvious wear and gradually lose their original luster.

3. Touch Test

Real: Real Jasper feels cold to the touch.
Fake: Plastic-made fakes feel warm to the touch.

4. Acid Test

Real: No visible reaction will happen when hydrochloric acid or white vinegar is dropped on real Jasper.
Fake: Fakes made from carbonate materials like calcite and marble may exhibit fizzing or effervescence when exposed to hydrochloric acid or white vinegar.
Jasper
Jasper
A species of Chalcedony, also known as Kinradite
Scientific name: Jasper
Mineral Variety: Chalcedony
Description
Description
Generally red, brown, yellow, or green in color, and sometimes even blue, jasper is an opaque microcrystalline quartz. Its smooth surface and high polish makes it a preferred rock for a gemstone or ornamental pieces. It is quite durable and withstands scratching.
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