That's a question you should be asking the Zales people, Bedazzled.
They should be able to supply you at least with the color and clarity of their product.
If not, make the sale contingent upon having the item checked out by an independent appraiser. He can tell you what the quality is.
Actually, make the sale contingent regardless. It's a reasonable request, which most jewelers will go along with.
Rich, GG
Sarsota Gemological Laboratory