Balinese cat Balinese cat The Balinese is a long-haired breed of domestic cat with Siamese-style point coloration and sapphire-blue eyes. The Balinese is also known as the purebred long-haired Siamese, since it originated as a natural mutation of that breed and hence is essentially the same cat with a medium-length silky coat and a distinctively plumed tail. As is the case with their short-haired counterparts, a genetic distinction is made between traditional or "old-style" and modern body types. In the American standard, color variants derived from the Colorpoint Shorthair are further considered a separate breed, known as the Javanese. There is no
Crystallographic point group known as a crystal class. There are infinitely many three-dimensional point groups. However, the crystallographic restriction of the infinite families of general point groups results in there being only 32 crystallographic point groups. These 32 point groups are one-and-the same as the 32 types of morphological (external) crystalline symmetries derived in 1830 by Johann Friedrich Christian Hessel from a consideration of observed crystal forms. The point group of a crystal, among other things, determines directional variation of the physical properties that arise from its structure, including optical properties such as whether it is birefringent, or whether it shows the Pockels