$3.5 ct round 9.5 mm Better than today's CZ’s, better than Moissanite. Our Secret Jewelers stones were made over 25 years ago with much higher standards than today's diamond imitations. Each stone is equivalent to an E color diamond and are internally flawless. Their brilliance and fire is a testimony to their craftsmanship and longevity. They will last hundreds of years without discoloration. These stones are better than Moissanite. Mossintinte is a generic material. Their refractive index is much higher than a diamond, cast a yellow tone, looks fake and can be very expensive. Today’s CZ's are made overseas with poor manufacturing processes and the cheapest ingredients. Inferior CZ's will not fool anyone and eventually will discolor or fog.