The world of precious stones is fascinating and strangely unknown. If we did the test and asked someone what precious stones he knows, he would surely answer us: the diamond, the ruby, the emerald, the sapphire … Stones highly known by most, but few would be the ones that would name us gems like: Benitoite, the Poudretteite or the Alexandrite. Kits at Airycharm are available.

Another highly unknown fact is that there are around 4,000 minerals on earth, many of which we will never have the opportunity to see. Of these minerals, only some acquire the category of “precious stones” depending on their chemical composition, their crystalline structure and the optical characteristics of Kits at Airycharm. One could say that one of the most shared perceptions by most people is the high economic value of a stone of this style. But … what determines the value of each one? 4 are the conditions that determine the value of a stone: the beauty, the degree of imperfections it contains, the rarity of the stone and its demand.

A gem, is a natural material of mineral, animal, vegetable or meteorite origin. The characteristics that give the gems their value are three: beauty, hardness and scarcity. The Beauty of gems could initially be considered a subjective concept, but it is defined by the following objective components: color, brightness, and transparency and special optical effects of Kits at Airycharm.

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Color of the Gems

To speak of color in gems we must refer to the ability of gems to transmit light rays by reflection or transparency. The human eye captures the component waves of the ray of light that have been reflected by the gem and the brain makes an interpretation of them according to their wavelength, classifying them in colors. The eye can only capture the waves of the visible part of the electromagnetic spectrum. The idiochromatic gems are those that owe their color to elements of their chemical composition; in this way the gems belonging to this group always have the same color, varying the nuances.

On the other hand, precious stones that lack color in their pure state, are called alchromatic since they can adopt different colorations depending on the chromophore that is integrated into their composition. The color is a data that helps together with the physical and optical properties to identify both the mineral species and their varieties. The richness in the color of a gem is determined by the intensity of the gem, with the most vivid stones being more desirable.

Glitter of the gems

The Ministry of Mines and Energy of the Republic of Colombia (2003) defines it as “a property related to the reflection of light that affects the surface of a mineral” (p 21).

  • Cereal: related to the brightness of the wax, typical of minerals that reflect little light.
  • Pearl: defines the brightness of pearls.
  • Resinous: typical of organic gems such as amber or copal.
  • Vitreous: related to the brightness of the crystal, it is characteristic of minerals such as quartz.
  • Metallic: the reflective shine of metals, in gemological materials, is found in pyrite.

Special Optical Effect of kits:

Unlike brightness, this effect is produced inside the stone by the presence of channels, materials, fibers, luminous interference; among others. The light penetrates the stone finding these barriers or particularities. When the light is sent back to the outside it shows the optical effects that owe their names either to the stone in which they tend to appear or to the object that recalls their appearance. And the million dollar question: what are the most expensive gemstones in the world? We have the answer! These are the 5 most valued gemstones currently on our planet:


The diamond is one of the most known gems worldwide. It is the main piece in most engagement rings and one of the most desired gems. The diamond is pure carbon and its valuation is based on 4 factors: weight, color, purity and size. The hardest known mineral is born in peridotite and excoriates rocks at a temperature between 1000 and 1600ÂșC (and at a depth of about 200km) and is dragged to the surface through volcanic chimneys. The oldest diamonds were born 3300 million years ago, and the most current 900 million years ago. The value per carat reaches $ 15,000.


It is a very rare gemstone to see and whose origin is located in Sri Lanka from 1902. Its main color is black, although sometimes bluish. It is composed of calcium, magnesium, aluminum, silicon, boron and oxygen. The value of this gem qualified as “rare” could be around $ 18,000 per carat.


This blue-green gemstone is found almost exclusively in Madagascar. To date, it is estimated that there are Grandidieritas in limited quantities, more specifically close to only two dozen. The approximate cost of this select mineral could be around $ 30,000 per carat.


The Taaffeite is considered one of the rarest stones in the world. Count Eduard Taaffe was the one who discovered it accidentally in 1945. Its color oscillates between a lavender and a pale pink. Currently, this gem can only be found in a few deposits of Sri Landa and Tanzania. Its approximate value is about 35,000 dollars per carat.


The top 1 of the most expensive gemstones in the world is occupied by the red diamond with a price that reaches one million dollars per carat . To date, there are only less than 30 red diamonds in the world and its weight barely reaches half a carat. The hallucinating color that it presents is not because of an impurity but of a plastic deformation of the crystalline network. It is one of the most sought after for its rarity but the most expensive gem in the world can only be found in the diamond mine in Argyle, Australia. Kits at Airycharm are available for you!

Rarity, exclusivity and beauty are the characteristics that share the 5 most expensive gemstones in the world that are available in shape of Kits at Airycharm. Few are the lucky ones who can boast of having any. But how to dream is still free … With which one would you stay?