One rainbow blasting, highly faceted Octagon shaped Swarovski Austrian crystal for some SERIOUS rainbows. Tiny Strass Swarovski pyramid shaped logo laser-etched as its mark of authenticity found on #8000 series Swarovski crystal elementsTiny Strass Swarovski pyramid shaped laser logo etched next to the drilled hole as its mark of authenticity found on #8000 series Swarovski crystal elements.