Koh-I-Noor

Koh-I-Noor is the most expensive diamond in the world as we all know. This diamond should be found near lava. You'll most probably find in a cave or a ravine. The most you'll most probably find is like only 3. You can also trade with villagers and mobs like endermans (but just make sure you don't look at them In the eye.). This should also make blocks but it would be really expensive or else its not gonna be so great. This gonna be the most powerful ore in Minecraft. It can only be mined with a netherite pickaxe. Or a enchanted diamond pickaxe (Efficiency V- for fast mining because this ore will be like mining Obsidian and Unbreaking III- this ore can break an iron pickaxe like its breaking a wooden pickaxe.) This ore can be enchanted. Making have more durability and withstand tons of pressure. The helmet can make you breathe underwater. The shoes give you feather falling so you can relax a little bit if you fall of a cliff by accident. 

For the tools:

-Sword (1.8 attacking speed and 10 attack damage)

Durability:2096

Renewable: Yes

-Pickaxe ( 1.4 attacking speed and 7 attack damage)

Durability: 2096

Renewable: Yes

-Shovel (1.65 attacking speed and 5.8 attack damage)

Durabilty:2096

-Hoe ( 4.3 attacking speed and 3 attack damage)

Durability: 2096

Renewable: Yes

I hope you guys like my idea out there. If there's anymore idea you guys wanna suggest, comment down at comment section.