average weight mm sizes clarity average estimated yield. iolite 3-10 gms 5-10mm VVS-IF 100 kgs in a month citrine 10 gms and above 10mm and above VVS-IF 100 kgs in a month amethyst 10 gms and above 10mm and above VVS-IF 100 kgs in a month red garnet 5 gms and above 5-10 mm VVS-IF 100 kgs in a month Rhodolite garnet 3-10 gms 5-10mm VVS-IF 50kgs in month tsavorite 1-2 gms 2-3mm VVS-IF 3-5 kg in a month tanzanite 3-5 gms 2-3mm VVS-IF 3-5 kg in a month Blue saphire 3-5 gms 2-3mm VVS-IF 3-5 kg in a month Yellow saphire 3-5 gms 2-3mm VVS-IF 3-5 kg in a month Ruby cabochons 10 gms and above 10mm and above Cab grade 100 kgs in a month Aquamarine 5 gms and above 10 mm VVS-IF 10-10 kgs in a month
