Mystic Quartz block design earrings & pendant

1 pair of Mystic Quartz block design earrings. 1 pendant (no chain!) These shine beautifully and shift in various colors of purples, blues and greens. I tried to capture some of the shift in the photos. The design reminds me of Tetris blocks and is a very unique design! *I don't know anything else about the brand, metal or stones in these.