The Hamilton Signature Ring, exclusively at Hamilton Jewelers. Since 1912, Hamilton has offered timeless design and meticulous craftsmanship to our discriminating clients. We invite you to view our Bridal Collection, featuring brilliant diamond engagement rings to help you celebrate this enduring commitment. This handmade ring has our signature diamond on the outside and inside of the shank. Available in .75, 1.00, 1.25, 1.50, 1.75 and 2.00 carat center stone. Princess cut diamond 1.08 carats set in platinum. E color and VS1 clarity.