Aloe capitata quartziticola
(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).
Aloe capitata var. quartziticola is native Masagascar
This single-headed plant has milky blue-gray stemless rosettes that can grow up to 2' across. sunny conditions can turn the plant purplish. The margins are edged with small triangular dark red teeth.
Some of the information in this description has been found at desert-tropicals.com, llifle.com and cactus-art.biz