These can affect its color, giving it a range of hues, including blue ... Michelangelo's David is made of marble. Marble is actually limestone made from metamorphosed calcite which has been ...

They found that while the range of solvents behaved differently on the marble surface, all enhanced the treatment similarly. Among calcite-based materials, marble is coveted for its aesthetic ...

This article was originally published at The Conversation. The publication contributed the article to Space.com's Expert Voices: Op-Ed & Insights. Chari Larsson, Senior Lecturer of art history ...