Search results for keyword: opals
pearlite transformation
Glow Obtained: Changes in Luminescence
Luminescence, or the emission of light, is an interesting property of many materials. Certain physical and chemical changes can cause the luminescence of certain substances to change dramatically. This phenomenon is especially prevalent in certain types of g......
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Oliver
Common terms for non-metallic mineral products
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Non-Metallic Mineral Products Terminology
Abrasives: These solid substances are commonly used to grind, hone, polish, or otherwise shape other substances or surfaces. Abrasives typically consist of small particles obtained from natural or synthetic sources. Examples of natural abrasives include......
Burnt Gems
The Appeal of Opal Jewelry
Opal jewelry has become increasingly popular over the last few years, due in no small part to its mesmerizingly beautiful play of colors. The fiery opal, known for its intense blue, red and greens, is the most popular and can command high prices. The opal truly reveals ......
gold jewelry
Gold Jewelry
Gold jewelry is one of the oldest and most popular forms of jewelry in the world. It has been a symbol of status, wealth, and luxury since ancient times, and has been used to adorn people of all walks of life. It was also used to denote royalty or status, and it is still an important......
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