87 samples
Eighty seven samples of category two gemstones belonging to category two samples were analysed, compared to 49 in 2018, and category three samples amounted to 12 compared to just one sample only in 2018 which represents an
Eighty seven samples of category two gemstones belonging to category two samples were analysed, compared to 49 in 2018, and category three samples amounted to 12 compared to just one sample only in 2018 which represents an