about us
Leading Rough Diamond
Rough to Polished
Company
Based in the global diamond hub of Surat, India, Atharva Diamond is a leading manufacturer specializing in the transformation of natural and lab-grown (CVD / HPHT) diamonds.
The company follows a high-tech Rough to Polish workflow that blends traditional craftsmanship with advanced automated systems.
Here is the step-by-step process Atharva Diamond uses to turn rough stones into polished gems:
Galaxy Planning & 3D Mapping
The process begins with high-precision analysis using Galaxy Mapping and Sarin machines.
- Action: The rough stone is scanned to create a 3D digital model.
- Goal: To identify internal inclusions (imperfections) and calculate the optimal way to cut the stone. This ensures the highest possible carat weight and clarity while minimizing waste.
Laser Marking & Planning
Once the internal mapping is complete, a “blueprint” is drawn onto the stone.
- Action: Using 3D laser technology, precise lines are marked on the rough surface.
- Significance: Even an error of a fraction of a millimeter at this stage can significantly lower the final diamond's value. This plan decides whether to make one large stone or several smaller, high-quality diamonds.
Laser Cutting (Sawing)
Atharva uses advanced Laser Sawing machines to separate the rough diamond into the planned pieces.
- Why Laser? Unlike traditional copper blades, lasers provide cleaner cuts with zero risk of breakage and minimal weight loss. This is especially vital for CVD and HPHT lab-grown diamonds, which often have specific growth grains.
4P Faceting & Shaping
The “4P” process is a hallmark of Surat’s advanced manufacturing. It involves four critical sub-steps:
- Table Polishing: Creating the flat top facet.
- Bruting (Girdling): Shaping the diamond's edge into a circle (or the desired fancy shape).
- Blocking: Establishing the basic symmetry by polishing the first 17-18 main facets.
- Bottom/Crown Polishing: Preparing the stone for final brilliance.
Final Polishing (Brillianteering)
The diamond is placed on a scaife (a high-speed polishing wheel coated in diamond dust). Skilled artisans polish the remaining facets—usually 57 or 58 for a Round Brilliant cut—to ensure the light reflects and refracts perfectly. Atharva focuses on achieving “Very Good” to “Excellent” cut grades.
Acid Boiling & Cleaning
After polishing, diamonds are put through a chemical boiling process.
- Purpose: This removes all traces of industrial grease, dust, and laser marks, leaving the stone perfectly clear and ready for inspection.
Internal Grading & Certification
The final step is quality control. Atharva’s in-house graders inspect the stones for the “4 Cs” (Cut, Color, Clarity, and Carat).
- Most of their high-value stones, particularly CVD lab-grown diamonds (ranging from 0.01 to 15 carats), are sent to the International Gemological Institute (IGI) for official certification.