Their surface was covered by a thin quartz layer (2) with tiny goethite needles. The next generation (3) was a red layer, consistently about 3 mm thick, with fine agate-like zoning. The color was ...

Rose quartz is one of the many quartz varieties used as a gem material. It gets its name from its delicate pink color, which ranges from very light (almost white) to medium-dark. The most appealing ...

(Adobe applications include profiles for various colour axes -- Green-Red, Gold-Blue, Turquoise-Sepia, etc). Set an Intermediate Transform with the Profile paramater, then choose your profile. Apple's ...