Let’s breakdown Gem Tiers. There are 9 Gem Tiers in NBA 2K23 and each Gem color determines the range of overall rating a card will be in. This is important for any collector who is trying to build the best collection of players possible.

Any card with an overall rating less than 80 is a Gold Gem Tier, they then progress up through Emerald, Sapphire, Ruby, Amethyst, Diamond, Pink Diamond, Galaxy Opal, and finally the highest Gem Tier is Dark Matter, a 99 overall.