Does your jewelry tarnish? Include a small polishing cloth, or an anti-tarnish strip and a plastic bag with the gift.
Give your jewelry in a special box: many gem shows will have a vendor who specializes in beautiful wood, silk, cloissone, or ceramic tiny gift boxes and pounches.
Include a personal note on scrapbooking or handmade paper that begs to be saved in her jewelry box
Do you have a special symbol, or a special thing that will remind your friend of you? Attach a small charm, such as a cross, peace sign, dolphin, or "Mom" charm near the clasp, so she thinks of you whenever she puts it on.
Search online for jewelry tags and metal jewelry stamping punches so you can stamp your initials on the jewelry tag charm