Also are precious metaphors when Gods children are represented as gemstones.. to miss the metaphorical nature of these things is to miss much..
i.e The Spirit/spirit being light that lights the gemstones.. is more real than metaphor, I think.. Humans not born again are stones, but born again become precious stones(gemstones).. The church is made of stones.. The Bride of Christ is made of Gemstones.. communicable with the head.. The metaphor is rich and deep and not anyway nearly fully displayed among us..