Board Thread:General Discussion/@comment-24253146-20150405220547/@comment-28584561-20150405225034

The theory isn't about Alexandrite being formed only by (Opal + Garnet) or (Sugilite + Pearl). The theory is about that Alexandrite can be formed by either (Pearl + Amethyst + Garnet), (Opal + Garnet), (Sugilite + Pearl), or even (Pearl + Amethyst + Ruby + Sapphire).