Design Your Own Lab-Grown Engagement Ring

A secure marketplace to
buy and sell luxury
diamond jewelry online

DIAMOCYCLE | Your Diamond Marketplace

How Can I Sell My Diamond?

Diamocycle Is The Secure, Fair, And Environmentally-Conscious Marketplace For Loose Diamonds And Diamond Jewelry.

We offer globally competitive pricing and a low-stress process that is easy, efficient, and confidential and works for both the buyer and seller.

With over 160 years of experience in the diamond industry, we have and always will center our clients’ needs by prioritizing integrity, transparency, and, most importantly, your peace of mind.

Buyer’s Guide

Looking to buy a loose diamond or diamond jewelry? Diamocycle offers gorgeous finds that are vetted by experts at a fraction of the cost.


Looking to sell a loose diamond or diamond jewelry? Diamocycle offers you maximum profit and an efficient, vetted selling system.


We believe in clarity, transparency, and communication.