What better way to toast the 21st birthday of your extra daughter than with a notable necklace? The love knot shape on this pendant represents your wish for your son and daughter-in-law’s eternal happiness.

In addition, this 21st birthday necklace is hypoallergenic since it is handcrafted from 14-karat white gold or 18-karat yellow gold plated over stainless steel. She will be overjoyed when she sees what you got her!