What’s the difference between Goethite Brown Oxide (PY43) and Monte Amiata Natural Sienna (PBr7)?

Jane Blundell’s Ultimate Mixing Palette includes the highly granulating ochre Goethite Brown Oxide (PY43), with Monte Amiata Natural Sienna (PBr7) listed as an alternative. But what’s the difference between these two colors?

DS Goethite (PY43) vs. DS Monte Amiata Natural Sienna (PBr7) on Stilman & Birn Beta

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What’s the difference between Phthalo Blue (Green Shade) and Phthalo Blue (Red Shade)?

Getting from PBGS to PBRS

Phthalocyanine blue (PB15) is an incredibly intense, staining, transparent, non-granulating, lightfast pigment that comes in two versions:

  • Phthalo Blue Green Shade (PB15:3)
  • Phthalo Blue Red Shade (PB15:6 or PB15:1)

(I’ll call them GS and RS in this post.)

What’s the difference, and which should you choose?

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What’s the difference between Quinacridone Rose (PV19) and Quinacridone Magenta (PR122)?

SH Purple Magenta vs DS Quin Rose: mixing oranges with Pure Yellow vs. mixing purples with PGBS.

Sometimes two colors you like are so similar that it seems silly to have them both on your palette, but how do you choose which one to use? It’s like that for me with Quinacridone Rose (a pink made from the pigment PV19) and the color that I usually call Purple Magenta (PR122), which is also known as Quinacridone Lilac (in Daniel Smith) or Quinacridone Magenta (in Holbein and some other brands).

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