Go to any diamond jeweler and say these words: “Tell me about the 4 C’s.”

They’ll tell you about the cut, color, clarity and carats a diamond has.

To look at those features is standard for the diamond industry which means one jeweler is likely to price each diamond pretty similarly to the next jeweler.

Now ask anyone: “How much is this NFT worth?” and you’re sure to get a range of different answers (heck, some might even say it’s worth $0).

OpenSea, however, just announced a really cool feature to help, which it's calling: ‘OpenRarity.’

It looks at a number of verifiable attributes of an NFT project and gives each piece a ‘rarity ranking.’

The aim is to become the protocol (the norm) for confirming an NFT’s level of commonality/rarity.

Here’s why we like this:

1. It differentiates Opensea’s platform from other NFT marketplaces. They may already be the biggest, but they need to continue to innovate in order to stay at the top.
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2. It feels like the type of feature that will be massively useful for those looking to buy NFTs - which in turn may lead to more trading volume, and therefore more revenue for OpenSea.
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3. They’re not starting with everyone; they’re starting with CoolCats, PudgyPenguins and MoonBirds which are all pretty liquid projects (i.e. lots of sellers, lots of buyers).
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   This way, they can prove the concept works, and refine the calculations behind the rarity rankings if required, without impacting every project on the platform.

Two thumbs up, we like what we hear.