RE: I'll try it again....The number of diamonds recovered from the kimberlite bodies in the Kelvin-Faraday lakes and their size-frequency distribution are excellent and are very similar to those for the 5034 and Hearne pipes, which each have grades averaging 1.67 carats per
tonne tonne
measure of weight or mass; 1 tonne=1000 kg. See also ton. . The two largest diamonds recovered weigh 0.40 carats (Faraday-2) and 0.09 carats (Kelvin-1b). The important point to notice is, besides the total number of diamonds recovered, that there are a relatively large proportion of macro-diamonds (those that did not pass through the 0.425-0.6 sieve sizes (Lakefield) or the 0.5 sieve size (De Beers), especially considering the small sample sizes.