From Leopard Gecko Wiki
Gem Snows are one of the four different types of Snows. Gem Snows were originally created by Jim Holler from Reptilian Gems. Just like the other three types of snows, they hatch out with a white body and black bands, seen in the picture to the right. As they grow older, the bands break up.
Gem Snow Genetics
Gem Snow Crosses
Currently there are a few different Gem Snow crosses. Jim has been able to successfully cross his Gem Snows into Hypo Lines as well as with Tremper Albinos. He is also working on creating Gem Snow RAPTORs.
Other breeders have crossed Gem Snows with Mack Snows. Like the other three snow lines, when bred to a Mack Snow, a Gem Snow can produce a Super Snow, which leads many to believe Gem Snows are related to Mack Snows, but are not Mack Snows.
Gem Snow Tremper Albino Cross (Holler).
Gem Snow Tremper Albino Cross, (Holler)
Hypo Gem Snow Cross, (Holler)
Gem Snow Hatchling and a Hypo Gem Snow Hatchling, (Holler)
Gem Snow het RAPTOR (Neo.Reptiliac)
Gem Snow Bell Albino Cross (Warren).
Gem Snow Raptor (Neo.Reptiliac)