Caperci Direct via Amazon offers the Caperci Women's Lab-Created Blue Sapphire Cupid's Arrow Heart Pendant Necklace for $39.99. Coupon code "YJUNRQV6" cuts it to $27.99. Plus, Prime members receive free shipping. (Non-members can spend $49 or more to qualify for free shipping; otherwise, shipping costs $4.98.) That's $12 off and the lowest total price we could find. It features a 16" chain.