A compilation of basilisk varities that either don't exist or are currently unverifiable.
Two mockups of the obsidian color supposedly found within Kolnavh. Of all the unknown varieties, this is the most likely to exist.
Sunstone, a fiery orange variant that supposedly glitters in the light.
And the tarnished variety, a shiny blue-green. According to legend these are very old sun basilisks that used to have the purest possible copper coloration. These do not exist, but are a popular way to portray "legendary" basilisks in artwork and stories, to denote age and wisdom.