Caffeine Molecule Alike Cast Necklace For Chemistry and Science Lovers - Gold and Silver Tone Caffeine molecule alike style necklace - simply add your charm while fully expressing your personality and fashion, designed for everyday wear and special occasions such as party, prom, wedding, anniversary, etc Unique chemistry structure necklaces - Ideal for coffee lovers, coffee enthusiasts, science lovers, biology majors, biochem studies, and chemistry majors or anyone who love exquisite novelties, we just creatively put the molecule at scientic lab into a piece of delicate jewelry Jewelry box and gift pouch packaged - Such a delicate molecule necklace will be the best present for your cherished person at Mother's day, valentine's day, birthday, anniversary, graduation, holidays Stylish DNA pendant necklace - Silver and gold plated, Nickel and lead free Chain Size- Adjustable length with 17-inch long + 3-inch extender