Sphalerite is zinc sulfide with dispersion more than three times diamond’s — honey, amber and garnet-red gems that literally spray rainbow fire. Spain’s Áliva mine set the standard. Soft (3.5–4) and cleavable, it is cut for collectors and display, not for rings.GEMIC Institute’s sphalerites are natural, certified in our laboratory, and filmed so the fire of the exact stone shows. One of a kind; worldwide tracked shipping with a 30-day inspection period.