This California Giant Rock Scallop sea shell measures approximately 6 1/4 inches in greatest shell diameter. The shell has not been cleaned with acid or a wire brush. It was only hosed off with water. This is its natural state. The photos were taken while the shell was wet, so the colors are more vibrant than they are when the shell is dry. To bring out the colors, apply mineral oil with a rag. Priority mail envelope cost is $10.60 within the United States. Combined shipping available. Overseas mailing is actual cost for First Class Mail International. First Class Mail International to Canada is $16.00. No handling charges. If the shell breaks during shipping, the buyer will be sent a similar replacement shell or receive a refund.