Dichroic glass piece used here personally made by me.
Started by making a brick of glass, cutting into smaller pieces, edges beveled, then re-fired. Built on a black background, shades of blue, bright green, purple, silver, gold and amber are the primary colors seen. Bubbles naturally occurring during firing. Bail was made using Art Clay Silver and attached to glass by re-firing.
Dichroic glass piece measures 60 mm x 15 mm. Finished size of pendant is 65 mm in length. Weight is 0.6 oz.