Crassula caput minima
(This plant comes in a 3.5" pot. You will receive a very similar plant to the one in the picture. It may or may not be blooming at the time of your purchase. The plant is shipped in its pot to prevent any damage to the roots).
Crassula 'Caput Minima', native to Africa, forms mats pagoda "shaped stacks" of small triangular emerald green leaves arranged in opposing ranks. Leaves turn reddish-purplish in bright light.
Some of the information in this description has been found at desert-tropicals.com, llifle.com and cactus-art.biz