18 karats white gold earrings

18Kt white gold earrings. Mark reads 750 and is placed on the post and on the butterfly clasp. Size is approximately 1 &1/2 inches long with 3 balls of gradually increasing size. The weight is 3 grams. Slightly yellow color at the end of the post which is normal with 18 karat white gold. No box. It is common practice to rhodium plate all white gold jewelry. Rhodium is very bright, and highly reflective. When the rhodium plating wears through, the colour of the actual "white" alloy can be seen.