10 karat Tri toned black hills yellow rose and green gold tie, tack

Landstrom, black hills, gold 10 karat tri tone, Black Hills, yellow rose, and green gold tie tack. The cluster measures 9/16 x 7/16 wide. The tackle long is 0.3 g the back and chains portion is not gold. This is a vintage previously owned tie tack there is no visible damage.