Double Sided Custom Engraved Iron 6th Anniversary Periodic Table of Element Rocks Glass Iron is the traditional gift for the 6th wedding anniversary and this rocks glass is a perfect present for your loved one! This cup is also a great gift for any science enthusiast for any holiday, birthday, wedding, bachelor or bachelorette party, anniversary, award presentation or retirement gift. Etched design is carved into the surface of the glass in frosted white, making the engraving truly permanent and the glass dishwasher safe. Our fast turnaround time means you can order your glassware last minute.