Caperci Direct via Amazon offers its Caperci Created Blue Sapphire Diamond Accent Infinity Pendant Necklace in .Sterling Silver for $26.99. Coupon code "RSH2ML2Y" cuts that to $18.35. Plus, Prime members bag free shipping. That's $14 under the lowest price we could find for a similar necklace elsewhere. It features a 4.5mm created blue sapphire and 18" chain.