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How to Score Polishing Laps

Most gem cutters prefer using scored polishing laps. They work better and faster than non-scored laps. Learn how to score and break in your lap.…

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Emerald has been synonymous with the color green since ancient times. A fine emerald is a truly breathtaking sight, and this member of the beryl family deserves its placement among the traditional “Big Four” gems along with diamond, ruby, and sapphire.
For millennia, artisans have carved intricate cameos from black-and-white onyx. Solid black onyxes, faceted or cabbed, are also popular jewelry stones.
Few gems have held our attention over millennia as well as sapphire. The pure blue colors and excellent durability of this gem-quality member of the corundum family make for an exceptional gemstone. However, not all sapphires are blue. The September birthstone comes in every color of the rainbow (except red).
When it comes to engagement ring stones, there’s a lot to consider. In the moissanite vs diamond debate, we’ll look at three main factors: beauty, durability, and price.
Hematite has a long history of use as a pigment. As a gemstone, this material is often carved but very rarely faceted. Despite its association with blood and the color red, hematite’s color can range from black and metallic gray to brownish red in thin slivers or crystals.
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An olive to bottle-green natural glass, moldavite is a rare material popular with collectors of unusual gems as well as those interested in its formation from a meteorite impact.
Obsidian is the most common form of natural glass and occurs in many attractive varieties. Since prehistoric times, people have used this material to make jewelry and carvings as well as practical objects, like knives.