Diamond standards
What qualifies a stone
We offer only a few stones a year, and each has to clear every test below. A stone that doesn't can still be recorded in our provenance registry.
The bar
| Test | Bar to clear |
|---|---|
| Origin | A GIA report confirming natural color. Anyone can check the report number on GIA Report Check. |
| Color | Fancy Intense, Fancy Vivid or Fancy Deep, in pink, red, purple, blue or green |
| Value | An independent appraisal of $1 million or more |
| Story | At least one of: a public auction record, a named-stone history, a documented mine of origin (for example an Argyle tender stone), a museum loan, or notable past ownership that can be documented |
| Title | A clean chain of title, Kimberley Process paperwork, and sanctions screening, including the G7 limits on Russian-origin diamonds |
| Custody | Stored and insured by the DAO in a secure vault, and inspected at least once a year |
| Market | Enough collector and investor interest to support active trading in its shares |
Digital records
- A registry record for every stone, holding its history on Hedera.
- One token per offered stone, divided into shares, with its Hedera token ID published in the offering documents.
- Transfers limited to verified wallets.
- Independent security reviews of our token contracts before launch.
How GIA grades color
GIA describes a fancy diamond's color by hue, tone and saturation. These are its grades from faintest to strongest, shown here for pink. We list only the top grades.
- Faint
- Very Light
- Light
- Fancy Light
- Fancy
- Fancy Intense
- Fancy Vivid
Darker stones can also be graded Fancy Deep, which we list, or Fancy Dark, which we don't.