Spinel facet ring. There's a slight possibility of sapphire, apparently_φ(・v・ (It seems they found out that they were mixed in the pick-up inspection at a production site where both sapphire and spinel can be obtained) Does this color look like spinel? From Madagascar. (Size is about 4mm) (Made of SILVER925, 18kgp finish) * Rhodium-plated type (silver color) is also available. * Available in free size, sizes 5, 7, 9, 11, 13, and 15. Please specify your size in the comment section. * Because it is handmade using natural stones, there may be cracks and irregularities.