I believe he is wearing this : https://www.gemsociety.org/article/what-were-the-gemstones-of-the-breastplate-of-aaron/ The funny thing is Christians for some reason believe crystals are evil and they hold no power however the Bible actually contradicts this. This breastplate is probably representative of Aaron's breastplate plus heaven is supposed to be covered with decorative gems and gold after christ returns. https://godshotspot.wordpress.com/2014/05/17/heavens-jewels/ Isn't it odd that we are only supposed to associate gems and crystals with witchcraft? God actually created them right? Anyways if one was to look into gems in the Bible one could surmise that they do have energetic properties. I am inclined to think somewhere along the line there was a pysop to link crystals aka gemstones with evil....