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rose gold plated necklace chain A gem that changes color-the formation and origin of alexandrite

Joylashtirilgan bilan Kador

Ichida 1830, a gem that changed color was discovered in the Ural Mountains in Russia, namely alexandrite. This day happened to be the birthday of Emperor Caesar Alexander II of Russia, so he named him Alexandrite after the Emperor of Russia. It was also called “Alexandrite” Bozorda.

The color of alexandrite changes with the change of the environment, enjoying the reputation of “emeralds in the day and rubies in the night”. It is the gem with the best color-changing effect among all the gems that can change color, so it is also called “alexandrite”. As in the case of opals, only chrysoberyl alexandrite can directly call “allex”, and other gemstones with a discoloration effect must indicate their species.

The main producing areas of alexandrite are Russia, Sri Lanka, Brazil, Madagascar and Tanzania, and the only producing area of ​​alexandrite that can produce cat-eye effect is Sri Lanka.

The quality evaluation of alexandrite is mainly based on color, ravshanlik, transparency, cut and quality.

(1) Color. The color evaluation of alexandrite is more complicated, not only requires pure body color, the greener the better under sunlight, the redder the better under light, and the color change effect is obvious, and the two colors have a greater contrast. It is also rare to find a chrysoberyl alexandrite that is emerald green in sunlight and red in light.

(2) Clarity and transparency. Alexandrite is the same as a gemstone of the golden emerald group, with good clarity and transparency. Because alexandrite is so precious, even if there is a little problem, it is also very valuable. Cat’s eye alexandrite is translucent to slightly transparent.

(3) Cut work. After being cut into faceted gemstones, alexandrite can produce strong brightness and good luster. Shu sababli, the cutting is required to be as perfect as possible. For alexandrite with a cat’s eye effect, it should be cut into a curved gem.

(4) Sifat. 0.3～0.4 ct are mid-range products, and the price of high-quality products weighing several carats can be comparable to emeralds and rubies.

Alexandrite has good hardness and toughness. It can be cleaned with an ultrasonic cleaning machine. Avoid high temperature, avoid collision, and store it separately to prevent damage.

 

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Guangzhou Jeyning Custance World Wewlass marjonlari markali ziraklarni suzadi 925 zargarlik buyumlari,Sterling kumush oltin 18k bilan qoplangan,14K,24K sariq oltin,oq oltin va Rose Gold.it Custom zargarlik buyumlari turli xil dizaynga ega,logo brend yoki mijozning talabiga binoan lazerni o'yma.

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