CLEONICERAS AMMONITE WITH EXCELLENT IRIDESCENT RED FLASHES OF MOTHER OF PEARL OR "FIRE OPAL GLOW". FROM THE MESOZOIC ERA, MIDDLE CRETACEOUS, ALBIAN STAGE--ABOUT 150 MILLION YEARS AGO. MINED, CLEANED AND POLISHED IN TULEAR, MADAGASCAR. SIZE IS 2 1/4 X 1 3/4 X 5/8 INCHES. WEIGHT IS 1.7 OZS. DEEP RED FIRE COLOR!