Trefoil Gemstone Diamond Gold Stackable RingThe Trefoil Gemstone Diamond Gold Stackable Ring will make a cherished addition to your jewellery collection. A dainty ring that can be worn alone or stacked with other rings. Trefoil Design: This Ring features a trefoil shape made up of 3 2mm gemstones or diamonds of your choice. The head measures approximately 7mm with a band width of 1. 2mm. Rough Hammered Texture: The band of the ring is characterised by a rough hammered texture and measures 1.