Complex sentence: Most of the jade is now gone, with only a few kilos of good quality jade found yearly Some is still mined in the Kunlun Mountains to the south in the summer, Bonavia, Judy.
Split into simpler sentences: Most of the jade is now gone, with only a few kilos of good quality jade found yearly. Jade is still mined in the Kunlun Mountains to the south in the summer, Bonavia, Judy.