The pendant has been reduced because the bale at the top is very slightly off centre. To notice you're going to have to look very closely. It does not affect the way the pendant hangs.
This stone was named after the spotted breed of dog. It can be found in a few countries around the world but Mexico is one of the largest exporters. Ironically it's mined primarily in the state of Chihuahua.
Should you not be totally satisfied with your purchase it may be returned for a full refund (T&C's apply).