This is a robust, well formed crystal of glassy and gemmy, yellow-green colored fluorapatite from Cerro Mercado. Classic old material, seldom found in this size with such good color saturation, today. Minor bruising on the terminal edges does exist but the size and gemminess of the crystal makes these tiny drawbacks acceptable in context, at the right price. It is a little more green-yellow than yellow-green, in person.