Some bracelets are available in different lengths. So before you purchase, be sure to measure one of her other bracelets to be sure she doesn't need a special length.
Bracelets are usually worn on occasions when she isn't working with her hands. Even when not working, a bracelet's proximity to the hands causes it to get bumped and banged, so it must be very durable. Jewelry designers take this into account, so you can be sure the bracelet you choose will last.
This is the classic bracelet. You'll find a variety of chain designs, like the traditional round-link rolo or wheat chain, in a variety of metals like sterling silver, 18k gold, and platinum.
A pearl bracelet is a traditional piece of jewelry. It adds a dressy touch to anything she wears, from jeans to a cocktail dress. Or she can formalize the look with a matching pearl necklace and earrings.
A bangle bracelet can be worn by itself for a simple look, or can be combined with several other bangles. Bangles draw the eye with metallic shine, and several bangles clinking together make a pleasant sound.