LVMH’s jewelry and watch sales rose in the third quarter, as Tiffany & Co. and Chaumet continue to upgrade their collections. Revenue from the category increased 8% year on year to EUR 2.5 billion ($2.79 billion) for the three months that ended September 30, LVMH reported Monday. During the first nine months of the year, sales of jewelry and watches climbed 4% to EUR 7.73 billion ($8.64 billion). In the third quarter, organic revenue growth refl…