sterling silver, borosilicate glass
From The Artist:
Royal Unobtainium was hand-fabricated from a 22-gauge sterling silver sheet, using a technique called “Fold Forming.” The central piece was created from borosilicate glass, with a galactic, deep blue swirl known as Unobtainium. Fit for any royal event, this is a standout piece with a substantial presence, yet surprisingly light in the hand. Pendant comes with a black rubber choker. The bale is large enough to accomodate any large chain or cord.
To maintain its beauty polish silver with soft cloth and the glass with a bit of alcohol.