A diamond jewel in absolute terms is mainly intended to put a face, a hand held or a value. This is the "little extra" that makes the difference.
It is NOT ok to contact this poster with commercial interests.
1) Do NOT send money for shipping the pet from abroad, they are scams.
2) Beware the seller or buyer who is from overseas.
3) Avoid bank wire service and western union because they has no buyer protection.
4) The safety way is to deal locally with people you can meet in person.
5) More about How to Avoid SCAMs.