Not marked but tested at 14kt.  Ring has the engraving D Heart L see pictures

This 14k Yellow Gold Men's Diamond Double Row Textured Wedding Band Ring features a total carat weight of 1.01 with a channel-set design. The ring showcases white diamonds with a clarity grade of I1-I2 and a color grade of G-H, set in a textured band crafted from yellow gold. With a stylish and masculine design, this ring is a luxurious choice for a wedding band, boasting a double row of dazzling diamonds that add a touch of sophistication and elegance to the wearer's look.