Help identify the number inside my ring

[diamondpassions]

Hi, I just bought a diamond ring and it has a number inscribed in the band, A1193409.

Wondering if anyone here knows a certification company that it could be from. Also, wondering if someone who has been around could post a list of an example of a number from each lab, as a one-stop reference for everyone who comes across a ring with a number in it or on the diamond.

Thanks!

 

[Dreamer_D]

A lab would not stamp the ring, as they only see the actual diamond. Most likely it is a model number from the company that cast the ring.

A number of the diamond coule be a report number though.