This lovely earth brown ceramic planter comes in a range of sizes. They have a matte clay like feel to them. Each pot slightly different due to their finish. 
 
Dimensions (approx)
14cm external, 12cm tall, holds a 12.5cm plant pot
16cm external, 13.5cm tall, holds a 15cm plant pot
19cm external, 17cm tall, holds a 17.5cm plant pot
22cm external, 19cm tall, holds a 20cm plant pot
25cm external, 22cm tall, holds a 23.5cm plant pot
28cm external, 25cm tall, holds a 26cm plant pot