I own a strand of diamonds and it looks exactly like these 2mm labradorite. The size and cut of these beads are very unique. The pendant is cubic zirconia with a gold plated frame and one ruby dangle.
I have strung it with chysoprase, carnelian, 2000 year old turquoise, sugilite, jade, ruby, apple coral, fossilized wooly mammoth tusk, labradorite and 22 kt gold plated over hill tribe silver. 16 inches long with 2 inches of extender chain.