Crassula perforata 'Variegata'. (String of Buttons)
This crassula grows well indoors, and does well in terrariums. The white and green tinged pink in high light, triangle-shaped leaves grow opposite each other and spiral around the stem, causing it to look stacked.
Prefers partial sunlight and minimal water. All crassula are drought tolerant plants.
Grows up to 50cm tall can be trimmed to create a more 'bushy' form. Frost tender so best kept above freezing.
Comes in a 7cm pot with 3 short stems growing well.