We love this cactus for its amazing shade of azure and lightly golden spines. It keeps this gorgeous color as it matures though can be a bit of a slow grower. 

Care:

Cacti like this variety will need bright filtered light and can handle some direct indoor sun. Water roughly every 2 weeks in the spring and summer when the soil is completely dry. Cut back watering to roughly once a month in the fall and winter with light waterings as cacti will go dormant. When re-potting use a very coarse cacti soil that water will drain well through.