ck Calvin Klein undulate ring, $140, ck Watch & Jewelry  

This bicolour ring from ck Calvin Klein resembles a softly undulating wave, making it a real must buy.

The bottom is made of polished stainless steel which means it won't turn your finger green, while the solid plate on top is made from PVD pink gold for a touch of pretty.

Don't pile on the ring candy when you're wearing this; keep it simple and this ring will really shine.

Available at Tangs, Robinsons and authorised retailers.