| Years | Gemstones | Industrial | Total |
|---|---|---|---|
| 2018 | 99,000 carats [ 100.00% ] | 0.00 carat [ 0.00% ] | 99,000 carats |
| 2017 | 230,000 carats [ 100.00% ] | 0.00 carat [ 0.00% ] | 230,000 carats |
| 2016 | 127,000 carats [ 100.00% ] | 0.00 carat [ 0.00% ] | 127,000 carats |
| 2013 | 1,000 carats [ 100.00% ] | 0.00 carat [ 0.00% ] | 1,000 carats |
| 2012 | 2,000 carats [ 100.00% ] | 0.00 carat [ 0.00% ] | 2,000 carats |
| 2011 | 6,000 carats [ 100.00% ] | 0.00 carat [ 0.00% ] | 6,000 carats |
| 2010 | 17,000 carats [ 100.00% ] | 0.00 carat [ 0.00% ] | 17,000 carats |
| 2009 | 46,000 carats [ 100.00% ] | 0.00 carat [ 0.00% ] | 46,000 carats |
| 2008 | 69,000 carats [ 100.00% ] | 0.00 carat [ 0.00% ] | 69,000 carats |
| 2007 | 100,000 carats [ 9.35% ] | 970,000 carats [ 90.65% ] | 1,070,000 carats |
| 2006 | 100,000 carats [ 9.39% ] | 965,000 carats [ 90.61% ] | 1,065,000 carats |
| 2005 | 100,000 carats [ 53.19% ] | 88,000 carats [ 46.81% ] | 188,000 carats |
| 2004 | 100,000 carats [ 9.43% ] | 960,000 carats [ 90.57% ] | 1,060,000 carats |
| 2003 | 100,000 carats [ 9.48% ] | 955,000 carats [ 90.52% ] | 1,055,000 carats |
| 2002 | 100,000 carats [ 9.48% ] | 955,000 carats [ 90.52% ] | 1,055,000 carats |
| 2001 | 100,000 carats [ 9.52% ] | 950,000 carats [ 90.48% ] | 1,050,000 carats |
| 2000 | 300,000 carats [ 25.00% ] | 900,000 carats [ 75.00% ] | 1,200,000 carats |
| 1999 | 230,000 carats [ 20.00% ] | 920,000 carats [ 80.00% ] | 1,150,000 carats |
| 1998 | 230,000 carats [ 20.35% ] | 900,000 carats [ 79.65% ] | 1,130,000 carats |
| 1997 | 230,000 carats [ 20.35% ] | 900,000 carats [ 79.65% ] | 1,130,000 carats |
| 1996 | 230,000 carats [ 20.35% ] | 900,000 carats [ 79.65% ] | 1,130,000 carats |
| 1995 | 230,000 carats [ 20.35% ] | 900,000 carats [ 79.65% ] | 1,130,000 carats |
| 1994 | 230,000 carats [ 21.30% ] | 850,000 carats [ 78.70% ] | 1,080,000 carats |
| 1993 | 230,000 carats [ 21.30% ] | 850,000 carats [ 78.70% ] | 1,080,000 carats |
| Total Production | 3,207,000 carats [ 19.83% ] | 12,963,000 carats [ 80.17% ] | 16,170,000 carats |
| Gemstones = Jewelry Quality --- Industrial = Industrial Quality | |||