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Increase Your Brilliance

Learn about a wide range of topics, ranging from how diamonds are grown, how custom diamond jewelry is produced, to misconceptions about lab diamonds promoted by the diamond mining industry.

A New Paradigm

Ada Diamonds brightens the world with compelling, sustainable, and conflict free diamonds. Learn about our unique diamond concierge experience, founding story, and innovative partnerships.

Why it matters where it comes from

It Matters Where it Comes From

Discover why diamonds cultured in a laboratory are more pure, sustainable, and meaningful than Earth-extracted diamonds.

Frequently Asked Questions (FAQ)

Want to Sell Your Laboratory-Grown Diamond?


We Buy High-Quality Lab Created Diamonds Directly From the Public

Ada Diamonds' Public Purchase Program allows private individuals to sell superlative, independently graded laboratory created diamonds. Specifically, Ada Diamonds is seeking to purchase synthetic diamonds that meet the following criteria:

  • Cut - Excellent or Ideal

  • Color - D, E, F, G, H

  • Clarity - SI1 or better

  • Carat Weight - 1 carat or larger

  • Fancy Colors - Blues and Pinks

  • Independent Certification - IGI New York, IGI Antwerp, IGI Dubai, or GCAL certification

  • Date of Certification - January 1st, 2016 or newer

Ada Diamonds Public Purchase Program Criteria

Ada Diamonds does not purchase any precious metals, ungraded lab grown diamonds, natural (mined) diamonds, diamond simulants such as cubic zirconia, moissanite, or any other gemstones such as sapphires, aquamarine, etc.

Sellers must be U.S. residents acting in a personal capacity. Sellers must provide proof of purchase from a U.S. retailer as well as the original grading report from IGI or GIA. Read all of the Terms of the Ada Diamonds Public Purchase Program

To see if your independently graded laboratory grown diamond is eligible for resale, please submit the form below and a member of the Diamond Concierge Team will respond within one business day. 

If you purchased a lab diamond from Ada Diamonds previously, your lab diamond is automatically eligible for a financial offer at a higher rate than if you purchased from another lab diamond retailer.

Some exclusions apply such as purchases indicated as final sale or uncertified lab diamonds.

Public Purchase Program






Please include the certificate number, shape, carat weight, color, clarity, cut, etc.