ONN MARGRETA EXPORT (OPC) PRIVATE LIMITED

State-of-the-art faceting and bruting for natural and lab-grown diamonds, focusing on yield optimization, symmetry tolerance within industry benchmarks, and minimal material loss. Services include laser cutting, computer-aided planning, and post-cut quality verification to meet grading standards.

NIC 32112 — Working of diamonds and other precious and semi-precious stones; Maharashtra NCR manufacturing corridor capabilities.

Manufacture of finished and semi-finished jewellery elements using handcrafting, CNC micro-milling, and lost-wax casting. We produce settings, bezels, chains, and bespoke mountings compatible with mass production or small-batch artisanal lines, with metallurgical verification and surface finishing options.

Class 3211 — Manufacture of jewellery and related articles; precision components for manufacturers and brands in Maharashtra NCR.

Comprehensive gemstone preparation including sorting, cleaving, preforming, and quality grading for precious and semi-precious stones. Integrated services cover authentication, laser inscription, and inventory-ready packaging tailored for export compliance and domestic supply chains.

Section C MANUFACTURING — Gemstone working services aligned with Maharashtra NCR logistics and export corridors.

Comprehensive services in working of diamonds and other precious and semi-precious stones including sorting, cleaving, bruting, precision cutting, polishing, and final grading according to international standards under NIC code 32112.

Full-spectrum processing aligned to industry grading standards.

Technical design services that combine CAD/CAM modelling, rapid prototyping, material selection guidance and production-ready tooling to translate concepts into manufacturable jewellery within Maharashtra NCR manufacturing clusters.

Design-to-manufacture capability with rapid iteration.

Regulatory and certification services including hallmarking coordination, gemological certification, export documentation, customs liaison and risk mitigation strategies for shipments originating from Maharashtra NCR.

Regulatory compliance and export facilitation expertise.