Alloys&Ores

Rose Gold is made by combining copper and gold

you get rose gold ingot

then you can upgrade your gold armor in the smithing table

to get rose gold armor/tools

Rose Gold armor and tools durability is higher than normal gold durability

cobalt ore is  found  between y = 1 and y = 33

deepslate cobalt ore is found between y = -62 and y = -33 

you can craft Cobalt Blue Ingots with Aluminum oxide and Cobalt Ingot and blocks, Stairs and Slabs with both ingots

aluminum can be made into anodized aluminum available in all minecraft colors
aluminum ore is found between y = 1 and y = 33

deepslate aluminum ore is found between y = -62 and y = -33

Uranium Gives the Radiation effect when consumed or when all blocks (in exception of uranium glass) are broken

you can craft uranium glass with 4 uranium and one glass

it emits a slight light and drops when broken

Uranium generate only in the deepslate layer in its deepslate varient

Steel is an alloy of coal and iron

you can craft an steel sword which can be dipped in uranium to deal the radiation effect

it is a more resistant than iron and great for building!