The Art and Science of Diamond Cutting

* * The Art and Science of Diamond Cutting: From Raw Mineral Crystals to Precious Gemstones * *

Diamonds are considered the strongest mineral in the world on the Mohs scale at level 10, but this strength is back with a unique mineralogical structure that has challenged human capabilities for centuries. The process of transforming natural raw mineral crystals into glowing gems requires a perfect combination of mineralogical, gemological, and modern engineering technology.

# # # * * Mineralogical structure and raw crystal analysis * *

Pure diamonds are formed by the crystallization of carbon elements under high pressure and temperature in the Earth's flesh layer (Mantle). The crystal structure of diamonds is in the three-axis system (Isometric system). The most common crystallization form is the eight-sided shape (Octahedron).

Despite the diamond's hardness, extreme scraping resistance, its atomic structure has a weakness called "Cleavage," which has chemical bonds between the strongest carbon atoms, giving the diamond a complete smooth crack in four directions, which runs parallel to eight crystalline faces.

# # # * * Rough Planning and Valuation * *

Internal structure analysis and planning are most important before mineral shunting. The goal is to maintain the total weight (Yield) and avoid defile (Inclusions) covert in mineral meat.

* * * Traditional method: * * Relying on the skills and experience of experts to assess the direction of cracks.

* * * Modern Technology: * * The gem industry uses 3D Scanning technology in combination with Laser Mapping to accurately model crystals.

# # # * * The Art of Cutting Divided: From Hammer to Laser Light * *

The diamond mineral fractionation process begins with

* * 1.Hammering a break along a smooth crack (clearing): * * The uncut mechanic requires precision to create a small groove parallel to the crack so that the ore weight is not lost.

* * 2.Sawing with laser technology: * * Allows cutting in all directions with micrometer accuracy

♪ # # * * Angle forming and cutting (Bruting and Faceting) * *

This step is delicate. The mechanic must cut the front of the board and square to the correct degree to bring the incident light to create a bright brightness phenomenon, which is unique to diamonds.

Store pawn collection by Bunchong Tientong

1 Mar 2026