Blue flower wasp

What a wonderful sight this was to come upon. With wings of deep metallic blue and a jet black body. I saw it on the wing at first, the flash of colour as the sunlight hit the wings, catching my eye.

Then I observed it land to scout around and there were some attempts to burrow in to the ground - at one stage disappearing completely. I'm wondering therefore if this is a female, as they lay their eggs on beetle larvae after paralyzing them.

Body length around 30 mm.