6:00 pm Georgia Museum of Art Sponsored by: Georgia Museum of Art Contact: Hillary Brown Director of Communications 706-542-4662 Rachel Rivenc, assistant scientist for the Modern and Contemporary Art Initiative at the Getty Conservation Institute, leads a conservation on De Wain Valentine’s “Gray Column.”Six of Athens' established venues for visual art hold "Third Thursday," an event devoted to art in the evening hours, on the third Thursday of every month. GMOA, the Lamar Dodd School of Art, Lyndon House Arts Center, Glass Cube & Gallery@Hotel Indigo-Athens and ATHICA will be open from 6 until 9 p.m. on those nights to showcase their visual-arts programming. Georgia Museum of Art, http://3thurs.org