Sapphire properties
One of the most distinctive characteristics of sapphire is its blue color, known as “Kashmiri sapphire,” in addition to the rare type of it, which consists of a unique compound color (orange-pink). In natural lighting, the sapphire appears blue, while in artificial lighting it shows its violet color, and this phenomenon of changing colors is embodied in a type of gemstone known as alexandrite, and recently both yellow and pink sapphires have become more common and used in the field of jewelry.
What distinguishes sapphire is its multiple colors and the way it displays colors depending on the angle of view at it, where some of its types appear blue when viewed from a certain angle and purple from another angle, as this contrast in colors came due to the inner layers that were formed during the formation of the stone It is noteworthy that sapphire is considered one of the precious stones that are characterized by hardness after the hardness of diamonds.
The most valuable kind of gemstones
Minerals can be classified as precious stones depending on their chemical composition, refraction, crystalline structure, and optical properties. They can be classified according to the degree of defects in the mineral and thus determine the value and rarity associated with them. The following is a list of the most valuable types of gemstones, arranged from cheapest to most expensive:
Read also:What did the Arabs call gold?- stone of Jeremejevite The price of one carat (0.2 grams) is $2,000.
- Fire agate, the price per carat of which is 2,300 US dollars.
- stone of poudretiteThe price per carat is 3,000 US dollars.
- stone of BenitoiteThe price per carat is 4,000 US dollars.
- Red Beryl stone, the price per carat of which is 10,000 US dollars.
- Diamond stone, the price per carat is 15,000 US dollars.
- stone of serendibiteThe price per carat is $18,000.
- stone of grandidieriteThe price per carat is $20,000.
- stone of TaaffeiteOne carat costs $35,000.
- The red diamond, which has a price per carat of one million US dollars.
Criteria for determining the quality of gemstones
Below we list the main factors that determine the quality and importance of a gemstone:
- the color: Some colors of gemstones are more rare and valuable than others, but in general red is the most distinctive followed by thin cobalt blue, then come bright vibrant orange stones, violet and blue to purple or lavender stones tend to be less attractive and less in demand than the colors other rare.
- Degree of purity and clarity: A gemstone with no inclusions visible to the eye is more valuable among stones with visible inclusions, the more visible the inclusions the lower the value.
- Shape/cut: Gemstones are cut into a wide variety of shapes and cut patterns, as with many colored stones, ovals and cushion shapes are very popular.
- Carat Weight: The larger the size and weight of the gemstone, the higher its price dramatically.
