A Look at Diamonds and Diamond Mining in Guyana
13/05/2022 · Economically viable diamonds in Guyana are small, mostly ranging from to ct. Diamonds with sizes up to 10 ct have been found but are uncommon. The largest gemquality stones ever recovered were and 42 ct, found in the Ewang region in 1926 and in the Perenong region in 2001, respectively (Persaud, 2010).