Rough uncut Diamonds, Opal, Emerald: Ethiopia We can supply the following: - Rough Ethiopian Opal. - Rough Emeralds. - Rough Diamonds. - Rough Tourmaline. - Au. On rough Ethiopian Opals we can supply the following quantities per month: 10-15kilos of 3gram-10gram some larger pieces great quality rough. 9750$ per kilo. 10-50kilos Mix Good quality mine run kilos all different grades and size. 5000$ per kilo. Second grade kilos can supply at least 50-100 kilos a month for 1600$ per kilo each. The third grade I can supply for 800$ per kilo. We have samples and pictures available.