When I was a little boy, I used to rummage through my mom's jewelry drawer ( I know, shocker). My favorite pieces were the cocktail rings left over from her 70s party girl days—chunky, colorful and way more fabulous than anything she was wearing in her 80s guise as "good christian lady" (that's another story).
Amy Lux of Lux Jewelry makes rings that totally take me back to that magical jewelry drawer. They're not quite costume—made with semi-precious stones, they're a step up yet still affordable. Each piece is completely unique as well, handmade by Amy herself.
So get a few for summer parties...and for any future gay sons.

Turquoise ring, $75, at Lux Jewelry.