What is a gem? What is a precious stone?

The term precious stone or gem is applied to those materials (minerals, crystals), which generally after being carved and polished, have enough appeal to be used as a personal or decorative decoration. Are you gazing for diy jewelry?

We have to abandon the term “semiprecious”.

For diy jewellery gemologists, the stones are all precious, semiprecious or semiprecious adjectives cannot be used, one of the urban legends is that they are used to distinguish the most sought-after gems from the least. Are you fond of diy jewellery?

What are the qualities that make a gem or precious stone attractive, have quality and be more valuable?

Beauty of diy jewellery

As always, beauty depends a lot on the personal criteria of the observer. For some, the beauty of a gem may lie in its color, for others in its brightness, transparency and reflections that depend on the size. The color, although subjective, there are certain patterns that statistically like more people and are more appreciated and logically more expensive. To all this we add the quality of the size, good polish, good symmetry and proportions, which will be together with the transparency or absence of inclusions (internal impurities), that when the light enters the gem, it will be reflected on the internal surfaces and come back out, the combination of the superficial reflections (brightness) together with those that come from inside (glow), we say that the stone, that the gem, has “a lot of life”.

  • The copy on the left is very saturated with tone, the stone of the center with less tone but lack of “life”, on the right stone with a lot of transparency, lighter and lively color and with a lot of “life”, many internal reflections.
  • The beauty of most gems is a result of the combination of two or more of these properties. But the beauty of a gem or precious stone is also in its own inclusions, in its internal characteristics, as examples: Tourmaline quartz or are they own crystals of tourmaline and their arrangement within the quartz that give it a special beauty.
  • Mossy or quartz, are the oxides that with their capricious forms make a gem more appreciated, more valued, or that pleases more. Ruby star, in which the arrangement of the needles of three directions and when the stone is carved in cabochon, you can see an optical effect of asterism, or star that moves according to the rolling of the stone with respect to light . Get or make the diy jewellery.

Examples of transparent stones, faceted, with inclusions and opaque stones carved in cabochon with striking colors In the case of opaque stones, such as turquoise or malachite, the most important factor in valuing their beauty is the color, or the arrangement of the different shades or bands of color.

Durability: Attribute intimately linked to hardness and tenacity. Hardness is the resistance that opposes a material to be scratched by another and tenacity is the resistance that opposes a material to be fractured by blow or pressure. As an example, I mention the diamond that is the hardest that exists, but nevertheless it is very fragile, it can fracture easily because it has four directions of exfoliation. Many museums exhibit stones carved into facets of great beauty, but they do not have a practical interest in jewelry due to their low hardness. These minerals are so soft that if they were used on a ring or even on a brooch they would scratch quickly and lose their shine easily, with which their appeal would be greatly diminished.

But on the other hand you can make or get the diy jewellery, Durability is not necessarily the determining factor when judging the value of a gemstone. The opal, for example, is quite soft but almost as prized as the gems mentioned above. This is due to its incomparable wealth that derives from the internal arrangement of colors. Quartz, one of the most abundant minerals of the earth’s crust, is always present in the tiny particles of the air we breathe and in the dust that is deposited on our clothes. According to diy jewelry it could be said that the hardness of the gems should be higher than that of quartz, which happens only in 10 or 12 precious stones. This does not mean that the others cannot be used, but that the care should be accentuated, especially when they are applied to rings. Other pieces of jewelry,

The fashions: The demand and, therefore, the value of certain gems fluctuate according to the fashions of different times. For example, during the nineteenth century a dark red variety of Bohemian garnet was very popular and can be seen in many pieces of jewelry from that era. Nowadays these garnets can also be obtained but the interest has decreased and they are hardly used anymore. The opposite has been happening in recent years with turquoises. The revaluation of Navajo Indian jewelry based on turquoise has increased its price. Tiffanys made tanzanite fashionable, Cartier used black diamond’s to enhance these circumstances make a stone become an object of desire.

Small size and portability: another important property of gems. Precious stones, more than any other possession, combine a high value with a small weight and volume, and can be used as a bargaining chip in times of depression or political changes. Although they do not have a direct relationship with the natural properties of gems, scarcity, fashion and portability are three factors that decisively influence the value of a precious stone.

There are many ways to buy a gemstone.

We sell it to you the diy jewellery and with your gemological record, where are the data that identify that gem, its photo, its weight in carats or carats, measured in hundredth of a millimeter, index of refraction and birefringence if any, specific weight, hardness of Mohs, its spectrum whether or not it has treatment, whether it is natural, synthetic or artificial, if it can be an imitation of another of more value. When you buy it in our store, you can download the micrographs of your inclusions.