gem cutting
Quick Summary
Gem cutting is the process of shaping and polishing gemstones to enhance their beauty and value. While most minerals are not suitable for gems due to lack of beauty, durability, or rarity, a select few are chosen for their color, clarity, and unique optical properties like iridescence or asterism.1
The process involves several steps:
* Tumbling: For softer stones, tumbling in a cylinder with abrasive grit polishes them but results in irregular shapes.1
* Cabochon cut: This involves a rounded upper surface and a flat underside, often used for opaque or translucent stones.1
* Faceting: This technique, crucial for transparent gems like diamonds, rubies, and sapphires, involves cutting numerous precise facets to maximize brilliance through light refraction and reflection. This method often sacrifices material but significantly increases the gem's value.1
Diamond cutting is a specialized branch with five basic steps: marking, cleaving, sawing, girdling, and faceting. Each step requires immense skill to maximize the diamond's value and brilliance.2
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