The Jacob & Co. Astronomical Tourbillon collection offers many popular models; here are some examples:       **Astronomia Tourbillon Baguette Orange Sapphires: ** The dial as well as lugs are set along with 422 baguette-cut diamonds, amassing approximately 31. 75 karats, paired with a rose gold benefits of undeniable luxury. Its unique four-arm structure houses a three-axis...