Antique Pearl and Diamond Tourbillon Ring

Antique swirl ring circa 1890 in 18 carat gold (750 thousandths) and platinum. It is decorated with an 8 mm diameter pearl, presenting a beautiful orient, and a swirl of 24 old cut diamonds for a total of approximately 1 carat.
 Detailed characteristics
 Weight: 5g
 Size: 60 FR (9.5 US - T UK)
 Metals: 18 carat gold (750 thousandths) and platinum
 Stones: Diamonds and Pearls (8mm)
 Diamond Weight: approx. 1 carat total
 Diamond Color: Estimated G/H
 Diamond Quality: Estimated VS/SI
 Hallmark: Owl (18 carat gold) and Mascaron (platinum)
 Height: 15.5 mm