Or more accurately, copper wire and pretty rocks. I was going through my supplies, anxious to find a way to use some of oddly drilled stones in my possession. I settled on triangles, by combining 3 copper eye pins and adding a fish hook ear wire (also copper). The bottom row is lapis lazuli with copper balls. The sides of the triangle are clear quartz with copper ball spacers.
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From @sumayyahsaidso