I DON’T KNOW ALOT ABOUT MARBLES. WAS TOLD AT A ANTIQUE STORE IT IS A CHRISTENSEN AGATE MARBLE. HE SAID THAT IT IS LARGE FOR THE STYLE WHAT EVEN THAT MEANS? USED A CALIPER AND IT READ 3/4 OF AN INCH. LOOKS TO BE IN GREAT CONDITION. HAS NO CHIPS THAT I CAN SEE. I PUT A RESERVE ON IT FOR WHAT HE OFFERED ME AT THE ANTIQUE SHOP. GOOD LUCK. On Oct-09-09 at 00:45:23 PDT, seller added the following information: ATTENTION WINNING BIDDER! I WILL REFUND THE PURCHASE PRICE OF THIS MARBLE IF FOR ANY REASON YOUR NOT HAPPY WITH THIS MARBLE. YOU WILL HAVE TO CONTACT ME WITHIN 3 DAYS OF RECEIVING IT FOR A REFUND. REFUND WILL BE ISSUED UPON ITS SAFE RETURN. BUYER PAYS SHIPPING AND INSURANCE IF RETURNED. I WANT YOU TO BE HAPPY WITH YOUR PURCHASE! THANK YOU.