If you’ve spent time browsing crypto casinos, you may have noticed a diamond badge reading “Tanzanite Certified.” It looks official, sits alongside talk of licenses and fair play, and is easy to mistake for a government seal of approval. It isn’t one – and understanding what it actually is matters if you’re using it to decide where to play.
It’s a Private Rating, not a Gambling License
“Tanzanite Certified” comes from Tanzanite (tanzanite.xyz), a research and data-analytics firm that studies the crypto-casino and Web3 iGaming industry. Tanzanite is explicit on its own site that it is not a casino, sportsbook, or gambling operator, and that it holds no gambling license itself. It doesn’t need one, because it doesn’t take bets or process wagers – it evaluates the operators that do.
The badge is the visible output of the “Tanzanite Standard,” a voluntary benchmark Tanzanite created for what it believes all crypto casinos should meet. As the firm puts it, a license confirms an operator is registered with a regulator, while the Tanzanite Standard measures player-facing practices that a license doesn’t necessarily cover.

What Gets Checked
To earn certification, a casino is assessed across five areas:
- Provably Fair – whether game outcomes can be independently verified as random and untampered with.
- Responsible Gambling – tools and policies for things like deposit limits, self-exclusion, and problem-gambling support.
- Customer Support – the quality and responsiveness of player-facing help.
- Game RTP (Return to Player) – whether payout percentages are disclosed and high.
- Operations – basic financial soundness, including proof of funds worth at least twice the casino’s maximum payout, and a minimum operating history of about six months.
Certification is free, and Tanzanite says no casino is excluded outright – operators that fall short are told where they’re lacking and can work toward meeting the standard. Importantly, the badge isn’t permanent: Tanzanite states certification can be withdrawn if evidence changes or a casino stops meeting the criteria.
Who Currently Holds the Badge
Tanzanite rates casinos on a 0/5 to 5/5 diamond scale. As of this writing, the following operators appear in its “Tanzanite Certified” directory, all currently rated 5/5:
- Stake
- Duel
- Shuffle
- Gamdom
- 500 Casino
- Dicey
- Goated
- Dedprz
How to Use the Badge Sensibly
- Don’t treat it as a license. A “Tanzanite Certified” badge tells you nothing about whether a casino is legally licensed in any jurisdiction. Always check for an actual gambling license from a recognized regulator (e.g., Malta Gaming Authority, Curaçao, UK Gambling Commission) separately.
- Treat it as a supplementary signal, not a guarantee. It reflects one firm’s self-designed criteria.
- Cross-check. Look for independent player reviews and complaint histories in addition the the badge.
- Remember certification can lapse. A badge you saw once doesn’t guarantee current compliance – check whether the casino still appears on Tanzanite’s live directory.
Bottom Line
“Tanzanite Certified” is a private, voluntary rating badge from a crypto-gambling analytics and consultancy firm – not a government license, not a guarantee of safety, and not free of conflicts of interest. It can be a useful extra data point when picking where to play, but it works best alongside – never instead of – verifying an operator’s actual gambling license and doing your own research.