ETHICAL LAB-GROWN DIAMOND
Exceptional Quality. Custom Jewelry. No Minimum Order.
Source loose lab-grown diamonds or create made-to-order rings and jewelry with trade pricing from the first piece.
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No Minimum Order · Trade Pricing · CAD Service · Worldwide Delivery
Available Diamond Shapes
Other shapes, sizes and specifications can be sourced upon request.
Featured
About
Us
A Family Jewelry Business, Founded in 2006
Founded in 2016, Efi & Co is a family-run jewelry business built on craftsmanship, personal service and lasting relationships.
Today, we specialize in lab-grown diamond sourcing, CAD development and made-to-order jewelry for private clients, designers and independent brands worldwide.
Hong Kong Workshop, Global Service
From one loose diamond or custom ring to ongoing collection development, every project is handled with the same care and attention.Visit our Hong Kong workshop by appointment, or work with us remotely through diamond videos, grading reports, CAD approvals and production updates.
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.
What Our Clients
Say About Us
The process was clear, responsive and highly professional.
Efi & Co helped us source the right lab-grown diamond within our target specification and budget. We received detailed videos, grading information and honest guidance, which made the decision straightforward and reassuring.
Charlotte Bennett
Independent Jewelry Brand, United Kingdom
They understood the design, not just the production.
We shared a reference image and a few initial ideas, and the team developed the CAD, refined the proportions and managed the entire process through to the finished piece. The final result felt considered, balanced and beautifully made.
Madison Carter
Jewelry Designer, United States
The no-minimum service gave us the flexibility to start small.
Being able to create one sample at trade pricing was extremely valuable for our business. Communication was personal, changes were handled carefully and we could test the design before committing to a larger order.
Sophie Williams
Emerging Jewelry Retailer, Australia
Free Delivery
Custom Design
Warranty
Ethical & Certified
Quality
Sustainable
Choice
Transparent
Pricing
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)