Cardi's Birthday Bling

Offset's not slowing down even though Cardi B's birthday has come and gone ... he's still dropping tons of cash for his new wife and  for some super expensive jewelry.

We're told the Migos rapper is giving the "I Like It" rapper a necklace, charm bracelet and Kulture's name emblazoned on a set of earrings. Offset reached out to Pristine Jewelers' owners Avi and Ofir 2 months ago to plan something special for Cardi's 26th birthday.

The 3 pieces are 100 carats strong in diamonds. Offset flew out the jewelers to personally hand over the cache to Cardi ... who couldn't contain herself and flaunted the sparkle at parties last weekend.

Cardi also sported the new bling Saturday night when she performed at Drake's concert. All in all ... we're told Offset dropped over six figures. And, that's just the tip of the birthday iceberg. Remember ... Offset also gave Cardi a Lambo earlier this month.

We're still waiting to know if  Cardi's sexual birthday request was granted.