Plain ring can be made in checker cut or regular faceted stone size 8mm, in your choice stones.Stones can be used Amethyst, Garnet, citrine, sky blue topaz, Peridot, rainbow moonstone labadrorite, black spinel, milky aquamarine, carnelian, white quartz, smoky quatz etc. We have other stones also, all jewelry rhodium plated, nickle free. 925 stamped