Handmade Borosilicate Small Black Rainbow Galaxy Dichroic Glass With Handmade 925 Sterling Silver Ring. This small rainbow galaxy glass part is made on a torch using glass dichroic which is an amazing light reflector. I imbed the dichroic in the glass in a way that it resemble star galaxy. Ring is also handmade and using 925 sterling silver. Glass Diameter :1.4cm(0.55inch) Metal: Borosilicate Glass Sterling Silver