NEW ORLEANS – A platinum dinner ring with a 7.96-carat Indian oval alexandrite stone, a painting by New Orleans artist George Valentine Dureau, and a circa-1910 Tiffany Studios bronze and favrile glass lamp are a few of the expected highlights in Crescent City Auction Gallery’s Important March Estates auction slated for Friday, March 17, and Saturday, March 18. The auction, starting at 10 am Central time both days, boasts more than 700 lots in a wide variety of categories. Absentee and Internet live bidding will be available through LiveAuctioneers.