Dear Aunt Judy,
Thank you so much for the lovely amber necklace you gave me for my 21st birthday. It really is beautiful and a joy to wear and It has received so many complements.
I had a perfect birthday and enjoyed an evening out with my friends in London. As you know, the family party is next week and I am really looking forward to seeing everyone.
Thank you again and see you at the party!
Lots of love Amber