Zentron Crystal Collection: 1/2 Pound Natural Rough Green Aventurine Stones Large stones are approximately 1" in size Individual stones within the Zentron Crystals package are unique and will all differ slightly. The stones you receive will not look exactly like the ones picture but will be very similar. Can be used for lapidary, cutting, cabbing, tumbling or for chakra, reiki, or other metaphysical practices Genuine Zentron Brand Crystals .5 Pound lot of stones (.22 Kilograms or 1133 carats)