The Roberta Crossover Wave Ring has a 2mm wave channel offset with cubic zirconia, made from sterling silver it is suitable for all inclusions (breastmilk, ashes(human and pet).  Please check out the FAQs section to see a full explanation of how much inclusion is needed and where to send your inclusion to. Colour options are shown in the drop down lists ashes colours are suitable for hair and umbilical cord too, if you have any special requests or need to let me know of a different inclusion than breastmilk or ashes please add a note to seller when purchasing, or message me