Block: Variation Selectors

Range U+FE00 - U+FE0F
Official Chart
Wikipedia Variation Selectors is a Unicode block containing 16 Variation Selector format. They are used to specify a specific glyph variant for a preceding character. They are currently used to specify standardized variation sequences for mathematical symbols, emoji symbols, 'Phags-pa letters, and CJK unified ideographs corresponding to CJK compatibility ideographs.