NBA Star Eric Bledsoe -- Drops $2,500 on Gold, Diamond Grillz

NBA superstar Eric Bledsoe gave himself a "Treat Yo'self" moment after signing his $70 million contract with the PHX Suns ... dropping thousands of dollars on gold and diamond grillz!

TMZ Sports has learned the 25-year-old point guard recently hit up Thizzelles Grillz -- a high-end grill maker in NYC -- and dropped $5,000 on two sick pieces ... one for himself, one for his brother.

The grillz -- which cover six bottom teeth -- are made of 18 karat gold ... and are encrusted with 6 high-quality diamonds.

The process is complicated ... take an impression, make a wax mold, fill it with gold or platinum, drill holes, screw in diamonds. Grill done.

Bledsoe isn't the only baller joining the grill movement ... Thizzelles owner Scott Spira says he's hooked up several athletes including Broncos cornerback Omar Bolden and Browns guard Shawn Lauvao.

And these things ain't cheap ... "Depending on the metal and diamonds the grillz can run up to 100K."

Say chee$e.