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A Palette of Textures

2 thoughts on “A Palette of Textures”

  1. Thank you for this useful information. I wish the drying time was listed with the color information. Actually I wish all of the relevant information was all on one chart as in the art store I’m always searching through different sources for all of the information I consider and it takes too long

    Why do the coarse grinds cost so much more than finer grinds of equivalent pigments? I wish it cost less to grind something less

    Is van dyke a reliable paint, with bituminous earth in it?


    • Hello Ted,
      You are welcome. We have not made a single comprehensive chart with all the different pigment qualities including dry times, but we will take that into consideration. In the meantime, here is a link to the dry time chart for Williamsburg colors: https://www.williamsburgoils.com/pdf_viewer?file=https://www.williamsburgoils.com/admin/image/get_assets/williamsburg-drytime-chart-091818.pdf
      As for cost of coarse pigments vs very fine, the synthetic iron oxides that compose most of our coarse colors are the same pigments as the Transparent Red and Transparent Yellow Iron Oxides which are very fine. These pigments are all series 4 colors. The less expensive colors are the natural iron oxides (umbers, ochres and siennas), which are series 1 and the opaque synthetic iron oxides (mars colors), which are series 2. Opaque and transparent iron oxides are called by the same color index name. For example PR101 is both Mars Red and Transparent Red Iron Oxide, but they have very different color qualities.
      In our testing, the bituminous earth in the Van dyke Brown performed with a lightfastness rating of Good. Good is our in-house rating based on standard ASTM test protocols. Good is the equivalent of ASTM Lightfastness II.
      Hope this helps.
      Take care,
      Greg watson


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