Agate is a variety of quartz, characterized by a texture in concentric or parallel zones of various colors and generally filling a cavity. The agate is itself a cryptocrystalline quartz variety of SiO2 chemical formula, which includes variants such as onyx, carnelian, sardoine, Jasper, and heliotrope … The agate, transparent to translucent, is hardness between 6 and 7, its luster is glassy. Its luminescence is white, greenish yellow or green, the crystalline system is trigonal and pleochroism zero. Density: 2.58 to 2.64.


Agate is formed in volcanic regions, from silica, water and various minerals (oxides of manganese, iron …) that give color to the bands formed by a rhythmic crystallization. Beautiful agates have been discovered in Germany, Czechoslovakia, Russia, Mongolia, China, Yemen, Morocco, Iceland, India … However, today, the main exploited deposits are in the south of Brazil (the Rio Grande do Sul) and in Uruguay, from which specimens several meters wide were extracted, but also at Mont-Lyall, Quebec. This ancient volcano produced lava 350 million years ago. On cooling, the rocks crystallized in the form of quartz, amethyst, chalcedony, and carnelian. There is also therapeutic green clay.

The Colors of Agate

Natural agates are usually in shades of gray, sometimes soft blue, or in shades of yellow to brown. But the porosity of this stone has allowed since Roman times to develop artificial dyeing techniques, by soaking in colored solutions. Today, the most vivid colors (pink, blue, yellow …) are obtained by dipping in chemical baths (acids, sulphates …) followed by heating to fix the color. Handcrafted Gemstone Tree is the best option for home decoration and positive vibes.

History and Legends of Agate

The agate takes its name from the river Akhatês, today the Dirillo, in the south of Sicily, where it was in abundance. It is the Greek philosopher Theophrastus who gave him his name. Present in many parts of the world and rich in its beautiful colors, it was used from the Antiquity: in Egypt and Mesopotamia, among the Hebrews, as well as by the peoples of the Valley of the Indus, then the Greeks and Romans. They made jewels and ornamental objects, like vases, or cult objects. Among the Celts, she is associated with Ceridwen, goddess of fertility and death. Pliny the Elder mentions in his work “Natural History” agate Pyrrhus, which would have represented, thanks to the natural drawing of its colors, Apollo playing the lyre and the nine muses…

What is The Metal to Associate With Agate?

The metal most commonly associated with agate when mounted in jewelry is silver; whose soft, luminous luster enhances the colorful streaks of the stone. It is also cut in various forms, in original and sober montages, on black cords for example, or threaded in the form of a pearl.

The Advice of Our Gemologist to Choose His Agate

There are many colors of agate, to choose according to their tastes, the palest shades and natural colors shimmering tinted stones. But some varieties, often rarer, have interesting features. Thus, onyx (black and white), sardoine (brown and white), and foam agate (moss green inclusions, rust), flame agate (jasper inclusions giving a red color), dendritic agate (gray-white, fern-shaped spots), and finally the agate landscape that seems to draw surprising landscapes of realism…

Agate Properties

Maintain His Agate

Water with washing up liquid will be enough to gently clean your agate. When it comes in a fine decorative slice, it is obvious that a fall can be fatal, but mounted jewel, it is not a fragile stone: very resistant to abrasion, it is even used in some techniques polishing the ceramic or gold leaf.

Virtues and benefits of Agate

In the middle Ages, agates witMiddles of cattle were knotted to obtain a good harvest. This rock has often been linked over the centuries to the relationship of man with nature, favoring the generous growth of garden plants, protecting against snake bites, insect bites or scorpions. It was also a protective stone against small daily troubles and troubles. Agate has the reputation of promoting the balance of body and mind, avoiding falls as well as energetic blockages. It would alleviate blood and skin problems, preserve the health of the lungs. This stone is associated with the second chakra, related to sexual energy, human relationships, and creativity.

Astrological Matches

The agate does not correspond to any birth month or wedding anniversary, but, probably because of its many properties, it is associated with the planet Mercury and the god of medicine Aesculapius (the equivalent of Asclepius in Greece). The green hue is linked to the sign of Taurus and Aquarius, the yellow to the Lion, the red to Libra, the blue to Pisces. In a divinatory draw, it would represent an improvement of the situation. In Chinese astrology, blue and green agates, as well as onyx, are among the twelve stones of love supposed to favor the sentimental life of their bearer…

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