This is one of the best Japanese cultivars.
With some direct sun it will become a lovely pink-red colour.
Very slow growing (Slower than an Ariocarpus fissuratus!)

Family: Asphodelaceae (Aloacee - Liliaceae)

Origin:  Japan  (Nursery produced cultivar)

Etymology: The genus "Haworthia" is named after the British botanist Adrian Hardy Haworth (1767–1833), The specific name "emelyae"was named after Mrs. Emely Ferguson, Riversdale, RSA, The cultivars name "Hakuma" is of Japanese origin.

Haworthia emelyae var. major cv. HAKUMA 

Description: Haworthia 'Hakuma' is a fascinating Japanese hybrid with small triangular rasp-like crystalline leaves with tubercles, turning pinkish to brownish-red in good light. The toothy texture of the silver leaves is reminiscent of Haworthia emelyae var. major. The prize of this plant is due not only to its indisputable beauty but also for being very slow growing (Slower than an Ariocarpus fissuratus!). This plant remain for a very long time solitary but may produce a few basal shoots when very old (if any at all).

 
 Leaf warts. The toothy texture of the silver leaves is reminiscent of Haworthia emelyae var. major.

With some direct sun it will become
a lovely pink-red colour.

A rare variegated form in which the
predominant tone is the yellowish-pink,

Cultivation: Watering Needs  It needs regular water, but do not water again until dry. Also, it is a species that is dormant in the winter and requires very little water (maybe even none) during the cold months. Frost Tolerance:  Light frost protection required. Minimum of 5ºC for safe growing (but hardy up to -5°C or less.) Sun Exposure: Requires light shade to bright light (protect from strong midday sun).  In shade the body colour will remain mostly green, while full sun will darken and give it a rich pink-red body colour.  Can be sunburned if moved from shade/greenhouse into full sun too quickly. The amount of sunlight it can withstand without scorching depends upon the how hot it becomes in the summer in the location in which it is planted. It will have more colour if it receives more light. During the spring it may be able to take full sun until the heat arrives at the end of spring.  In an area that has hot afternoon sun, it may be able to take full morning sun, but requires afternoon shade or afternoon light shade. Needs a deep pot to accommodate the long, thick, contractile roots.

Propagation: Offsets that appear at the base between the leaves; leave them attached to form a cluster, or wait until they are 1/3 the size of the parent and then detach and plant.