how much is a diamond coco assassino worth

The most likely match is Cocoa Assassino , not a real-world diamond, and its in-game value is listed as $61M with $291K/s generation.

What that means

If you meant the Steal a Brainrot character/item, that’s the current price/value shown on the public wiki.

If you meant an actual diamond or a different “Coco Assassino” item, the value would depend on the exact object, size, and market, so the estimate changes a lot.

Quick note

A separate search result for “Cappuccino Assassino” shows a crypto-style token priced at 0 USD , but that appears unrelated to Cocoa Assassino.

TL;DR: Cocoa Assassino is listed at $61M in-game.