Talk:References in Steven Universe/@comment-1328732-20150720055117/@comment-26891011-20150814210143

Lapis Lazuli, just like any other gem in the SU series, is named after an actual semiprecious gemstone that grows naturally in the earth. Probably the most easily recognizable use of lapis lazuli is in egyptian artifacts:

http://www.independent.co.uk/migration_catalog/article5184319.ece/alternates/w620/egypt-tut.jpeg

In short, neither series is a reference to the other in this case.