| Sold | Grade | Monthly Average |
| Jul 2026 | 1.8 | $26.00 |
| Aug 2025 | 3.5 | $42.00 |
| May 2024 | 3.5 | $46.00 |
| Jun 2024 | 3.0 | $30.40 |
| Aug 2012 | 3.0 | $22.80 |
| Jan 2026 | 2.5 | $29.50 |
| Sep 2021 | 2.5 | $40.00 |
| Jun 2019 | 2.5 | $22.00 |
| Dec 2018 | 2.0 | $24.00 |
| Jul 2017 | 2.0 | $25.65 |
| Feb 2016 | 2.0 | $15.91 |
| Oct 2011 | 2.0 | $16.75 |
| Mar 2016 | 1.8 | $17.75 |
| Feb 2022 | 1.5 | $34.00 |
| Aug 2017 | 0.5 | $5.60 |