Red is a natural color and is called synopia, or PORFIR. This color is of poor and dry nature. You well rubbed, and, the more it is rubbed, the more sorts. F. Good to worry on the panel, in the chapels, on the wall, in Fresco and the SECO. About Fresco and SECO I will give you clarifications when we talk about working on the wall. I said so far, you're enough for the first red. Let's now talk about how to make red, wearing the name "Cinabrese" (quinvar).
Suitable to the color of the carnatia, on the wall, as SL about the nature of it. This is a light color and is called Cinabrese; And I do not know if this color is used elsewhere than Florence, and is most suitable for the color of the carnatia, or for the color of the figures, on the wall, working hi irresco. This color is made of the most beautiful and the most open synopia in touch they are found; And he is pissed and rubbed with lime, who, in Florence, is called Bianco Santogiovanni; And this white is made of very white and well cleaned lime. When these two colors are well rubbed together (ie two red cinabrese parts, and a third of white), make small turtles, as the half of a nut, and let them dry. As you need them, take you, you think you need, for this color is of great use to the coloring of the faces, mys and nudes, on the wall, as I told you. And sometimes you can lace with beautiful vestments, which, on the wall, seem to be made with cinnabar. Let's talk about the nature of the red called CINABAR, SL how to rub it.
There is a red color, which is called CI-Naked, and this color is chemically made in Alambic, and which - however, it would be too much to say - I stop talking. You would also be for finding - you will give you a tasting -, many recipes, especially you will be charged with the monks. But I advise you, in order not to lose time with many and many habits, you, however, take the spite - to which you find, money - you must. I want, however, to learn how to buy and how to distinguish the good cinabrum of the fool. Always buy cinnabar in pieces, and not mated, nor pissed. PRICE? Most of the time it is plasted with either miniu or brick pissed.
Look at the whole piece of cinnabar, and the largest height and fault of the largest and thin, that you know is the best piece. On this one puts the stone and rub it with clean water, as long as you can; For, you are rubbing it every day for twenty years, it would be getting better and better for work. This color requires multiple glues, after the places where you are using it, and I'll talk about it, and I'll show you what is most space for it. But remember that its nature does not indulge in touch with the air; That's why you are more on the panel than on the wall. Staying outdoors - when he is worked on the wall -, he's gathered after a while. Let's talk about the nature of a redness called Miniu. The red that is called miniu is a chemically processed color.
This color is good to use only on the panel, because you work with it on the wall, as it comes in touch with the air, gangs and loses its color. Let's talk about the nature of a red called "amatisto", or "amatito" (hematite). The red that is called amatisto is a natural color that is drawn from a very loud and solid stone. And it's so solid that it is made of it for the golden polish on the panel; It gets black and perfect as a tan-closed diamond. The clean stone is purple, or blackish, and has a cinnamic blame. Piatra this catches it first in a bronze nut, because, striking the porphir stone, it might scatter; After you were pissing it, it puts the areas as long as you want to rub, and with clean water it's streading the stone; And the more you rub it, the better and the color will come out. This color is good for works on the wall in Fresco.
And give a color like cardinals, or purple, or like the lake. It is not good to use in other works, or mixed with glues.
* Note: Cennino Cennini -Painting Treaty, Meridian Publishing House, 1977