Available in 14k yellow gold (and 10k yellow gold upon request) - measurements available are 1.5 millimeters and 1.8 millimeters (2.25 millimeters, 3 millimeters, 3.8 millimeters, 4.75 millimeters, 5.8 millimeters, 8.2 millimeters, and 11.5 millimeters upon request.)