Haworthiopsis dekenahii
Native range: South Africa
Known names: Haworthia magnifica var. dekenahii, Haworthia retusa var. dekenahii, Glass Window Succulent
Hardiness: Best kept above freezing
Mature Size: ~4" tall, clump-forming
Light: Bright light, half day sun, avoid hot afternoon sun.
Water: Water more often during growing season (Spring - Autumn)
Soil: Succulent mix, fast-draining
Dormancy Period: Winter
Pet-Safe: Yes
Plant Size: 2.5" pot
 
Haworthias, in the wild, are usually found growing quite below the soil line. They are known for their "windows" that allows light to penetrate through their leaves. Haworthia Long inflorescence appear late summer with miniature white flowers. Avoid hot afternoon sun. 
Haworthia dekenahii's "windows" are a little more sandpapery in texture.