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The faces of diamond octahedrons are highly lustrous owing to their hardness; triangular shaped growth defects (trigons) or etch pits are often present on the faces. A diamond's fracture is irregular. Diamonds which are nearly round, due to the formation of multiple steps on octahedral faces, are commonly coated in a gum-like skin (nyf). The ...
Main diamond producing countries. Diamond is a solid form of the element carbon with its atoms arranged in a crystal structure called diamond cubic.Diamond as a form of carbon is tasteless, odourless, strong, brittle solid, colourless in pure form, a poor conductor of electricity, and insoluble in water.
A diamond simulant, diamond imitation or imitation diamond is an object or material with gemological characteristics similar to those of a diamond. Simulants are distinct from synthetic diamonds , which are actual diamonds exhibiting the same material properties as natural diamonds.
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Adamantine minerals possess a superlative [clarification needed] lustre, which is most notably seen in diamond. [1] Such minerals are transparent or translucent, and have a high refractive index (of 1.9 or more). [2] Minerals with a true adamantine lustre are uncommon, with examples including cerussite, zircon, and cubic zirconia. [2]
Most inclusions present in gem-quality diamonds do not affect the diamonds' performance or structural integrity. When set in jewelry, it may also be possible to hide certain inclusion behind mounting hardware such as prongs in a way that renders the defect invisible. However, large clouds can affect a diamond's ability to transmit and scatter ...
Diamond expert Dan Moran told Yahoo News that while he generally agrees that younger and “less established” clients are more likely to go for lab-grown diamonds, he’s been told by “many ...
Scholars have proposed many identifications for myths about luminous gemstones described for over two thousand years. Most frequently rubies or carbuncles (often red garnets), which classical and medieval mineralogists did not differentiate, and less commonly other gems, including diamonds, emeralds, jade, and pearls (Ball 1938: 497).