Any tips on diamond altitute

[Simoyd]

Gem locations 1.0?

i farm sapphire between 100 and 125, topaz 120-140, diamond 0-20, emerald 0-20, amethyste 0-20, ruby the godsake they are i saw the most around 10-20

EDIT: To my knowledge this was the first guy to get to level 50, so I trust his info