About
We Create Jewellery
With Quiet
Precision
At Efi & Co, we design jewellery that feels refined, personal, and enduring. From loose diamonds to custom creations, we guide you through a considered process focused on clarity, craftsmanship, and beauty.
We work closely with each client to shape pieces that reflect their vision, from stone selection and design direction to final finishing. Whether you are beginning with an idea or a specific diamond, our role is to make the journey feel seamless, thoughtful, and trustworthy.
Services
Diamond Sourcing / Certification / CAD & 3D Design / Bespoke Manufacturing / Stone Setting / Finishing & Engraving / Private Consultation
From Stone Selection to Finished Jewelry
A closer look at how we source diamonds, review specifications and support clients through custom-jewelry development.
Every stone and finished piece is assessed for proportion, quality and presentation before delivery.
- Loose Diamond Sourcing
- GIA/IGI Certification
- Private Consultation
- CAD Design
- 3D Design
- Bespoke Manufacturing
- Stone Setting
- Engraving
- Polishing & Finishing
Certificates
ECOPHILIA LIMITED
Office:
71-75, Shelton Street, Covent Garden,
London, London WC2H 9JQ, UK
ECOPHILIA COMPANY LIMITED
Workshop & Showroom:
7F 34 Hung To Road Geek Lok Industrial Building Kwun Tong Hong Kong
© 2026 Efi & Co. DPMS Category A Registrant (Registration No. A-B-24-07-07832)