Engineering Excellence
Behind Every Diamond
From ethically sourced rough diamonds to precision-cut masterpieces, every service reflects decades of craftsmanship, innovation, and uncompromising quality.
Complete Diamond Manufacturing Solutions
Six precision-engineered stages — every step managed in-house by master gemologists and cutters.
Rough Diamond Sourcing
Ethically sourced rough stones from long-term mining partners across Africa, Russia, Canada and Australia — traceable from origin.
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Diamond Planning & Mapping
3D scanning and AI-assisted planning determine the optimal cut plan — releasing maximum yield, brilliance and value from every rough.
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Laser Cutting
Sub-micron precision laser sawing and shaping — the exact geometry planned by our gemologists, executed to the tightest tolerances.
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Precision Polishing
Hand-finished on the world's finest scaifs by master polishers — each facet aligned for optical symmetry and unmatched light return.
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Quality Inspection
Multi-stage 4C review under 10× loupe and calibrated lighting — proportion, symmetry, polish and clarity verified before release.
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Certification & Global Delivery
Independent GIA / IGI / HRD grading with sealed, insured logistics to 30+ countries via the world's most trusted secure networks.
EnquireFrom Rough Stone to Timeless Brilliance
Eight meticulously choreographed stages, executed entirely in-house.
Rough Stone
Selected origin
Sorting
By grade & shape
Planning
3D cut mapping
Laser Cutting
Precision sawing
Bruting
Girdle shaping
Polishing
Facet finishing
Inspection
4C verification
Certification
GIA / IGI report
Driven by Precision Technology
Where centuries-old craftsmanship meets the world's most advanced diamond engineering systems.
Advanced Laser Mapping
High-resolution 3D scans capture every inclusion and fracture — mapped to the micron before a single facet is cut.
AI Diamond Planning
Proprietary planning engines evaluate millions of cut permutations to maximise brilliance, yield and value from each rough.
Precision Manufacturing
Sub-micron laser sawing, automated bruting, and computer-assisted polishing deliver consistent, repeatable perfection.
Multi-Level Quality Control
Every stone passes five independent inspection stages against the strictest 4C benchmarks in the industry.
Why Leading Jewelry Brands Choose Netaji
For over two decades, luxury houses and global retailers have relied on our craftsmanship, transparency, and consistency — stone after stone, shipment after shipment.
- Ethical Sourcing
- Expert Craftsmanship
- Precision Manufacturing
- Global Export Standards
- Consistent Quality
- Trusted Partnerships
Numbers that speak of trust.
Worldwide Shipping
Trusted Global Logistics Partners
We export diamonds and fine jewellery globally through the world's most secure and recognised logistics networks.
Let's Build Your Next Diamond Collection Together
Partner with Netaji Jewels for exceptional craftsmanship, precision manufacturing, and trusted global delivery — from a single certified stone to a full production run.