Rembrandt's sparkle effect

[Rochelle Brown]

There is a book written by Ernest Van Wetering called "Rembrandt, The Painter at Work" by Amsterdam University Press. It says among many things that the sparkle effect that is seen in some of Rembrandt's paintings is partially due to the use of quartz powder and glass powder which was actually found in the layers of paint. Although, finding quartz powder for sale anywhere is probably as challenging as finding it in a Rembrandt.