Before the advent of laser technology, diamond cutting was a labor-intensive craft. Diamond cutters relied on other diamonds to meticulously shape the gemstone, a process that demanded exceptional skill and often led to considerable diamond wastage. This article delves into the traditional steps involved in diamond cutting.
Traditional Diamond Cutting Steps:
Planning and Cleaving:
Assessing the Rough Diamond: The process commences with an evaluation of the rough diamond's shape and inclusions. The cutter strategically plans the cuts to optimize yield and minimize waste, employing tools like a laser saw or cleaving instruments.
Round Shape Formation:
For round brilliant-cut diamonds, bruting is crucial. The diamond is positioned on a rotating lathe, while a second diamond, known as the bruting wheel, grinds a groove around the diamond's girdle to achieve a round shape, ensuring symmetry.
Precision in Facet Placement:
Diamond cutters utilize a rotating cast-iron wheel embedded with diamond dust to grind and sculpt the diamond's facets. The number and arrangement of facets are determined by the desired cut, be it a brilliant cut, princess cut, or emerald cut.
Table Facet, Main Crown Facets, Pavilion Facets, Girdle Facets, Final Facets: Each step meticulously crafts different facets, culminating in a completed design.
Post facet cutting, the diamond undergoes a careful polishing process to eliminate any surface imperfections or scratches, enhancing its brilliance and clarity.
Comprehensive Evaluation: The finished diamond undergoes scrutiny for factors like symmetry, proportion, and the absence of defects. The cutter ensures compliance with industry standards and desired cut specifications.
Thorough Examination: A final inspection meticulously checks for any remaining imperfections, ensuring the diamond aligns with the desired cut and quality standards.
Grading and Certification: In some cases, the diamond is sent to a gemological laboratory for thorough grading and certification. The certificate furnishes essential information about the diamond's cut, color, clarity, and carat weight.
Laser Inscriptions: Certain diamonds receive laser inscriptions on the girdle, which may include a certificate number or other identifying marks.
Lumimetric has provided light sources and technical support to many users in the field of laser cut diamonds, and today has compiled a list of the more common questions about laser gemstone cutting.
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