While it's unclear whether or not diamonds really are a girl's best friend, everyone can agree that a dog made out of diamonds is everyone's best friend. Shop for friendship-enhancing gems with today's Groupon: for $75, you get $150 worth of fine jewelry at Inter-Continental Jewelers.

All that glitters is found in Inter-Continental Jewelers' four-walled treasure chest, which teems with rings, earrings, bracelets, and pendants. With 35 years of experience under their diamond-studded belts, the shop's globetrotting gem hunters traverse the planet to collect diamonds from some of the world's most distinguished diamond cutters and diamond-crafting facilities. They use these finds to craft their own jewelry and spruce up humans with sparkles a starry night sky would envy.

Connoisseurs of bling can enhance the neck's elegance with a 14-karat white-gold diamond heart pendant ($149) or enrich the ear's felicitous grace with a pair of 14-karat white-gold diamond stud earrings ($149). Since Inter-Continental specializes in engagement rings, it's much easier to mastermind a risky proposal, and the store's wedding bands are great for carrying along to a wedding in case a bride or groom ever needs an emergency backup. Men considering matrimony can encircle their favorite phalanx with a classic 14-karat yellow-gold men's wedding band ($199), and ladies can slide their lovely knuckles through a 14-karat two-tone diamond engagement ring ($249, center stone not included).