The Hamilton Solitaire 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 shank. Available in .50, .75, 1.00, 1.25, 1.50 and 2.00 carat center stone. Available in platinum or 18k white gold.