Colored sapphires mainly include Padparadscha, pink sapphire, purple sapphire, orange sapphire, yellow sapphire, green sapphire, colorless sapphire and black sapphire. Each has its own color range, color variation factors and market value.
The color of the colored sapphires, which is known in the industry as Padparadscha, is very beautiful necklace photo >>visit here<<. They usually have a high value per carat and are much higher than other colored sapphires. Despite these different descriptions of Padparadscha’s colors, industry insiders generally believe that Padparadscha’s color has a strong saturation and mild to moderate pink orange to orange pink color.
Pink sapphire range from red to purple, with light to bright color saturation and light tones.
The color range of the yellow sapphire is from light to dark yellowish green to orange yellow with light or high color saturation. The best quality yellow sapphire color should be bright to yellow to orange.
Orange sapphires friendship rings range in color from yellow-orange to red-orange. The best quality orange sapphire is red and orange in rich, pure orange to medium tones with bright saturation.
Green sapphires range in color from light to dark cyan to yellow-green and usually have lower saturation. Green sapphire is more common on the market, but it is not very popular cheap necklaces. Its color is described as earthy yellow or olive. This is because green sapphire tends to have a lower saturation or lighter distribution.
The industry pointed out that colorless sapphire or white sapphire is the purest corundum. As a colorless sapphire, the closer the color is to colorless, the higher the value. But if with very light gray, yellow, brown and blue, it will reduce the value of colorless sapphires. In the jewelry industry, colorless sapphires have long been very popular as a small accessory stone.
Color-change sapphire is a chameleon in corundum that exhibits different colors in different light. In general, under daylight and fluorescent lighting, the basic color range of color-change sapphire ranges from blue to purplish blue under daylight and fluorescent lights. Under incandescent lamps, the color of the color-change sapphire ranges from bluish violet to a strong reddish violet. Some rare color-change sapphires appear green in daylight and reddish-brown in incandescent light.
The special effects of sapphires include:
Sapphire can contain rich rutile inclusions. These needle-like inclusions intersect at an angle of 60°, and can be processed into a curved gemstone to display a six-shot star line. Under the illumination of the point source, the six star lines converge together, bursting at the top of the gemstone’s curved surface, dazzling and eye-catching angel wing necklace.
Optimization and treatment of sapphire
Treatment: Gemstones with poor quality or non-gemstone grade minerals are made to look like gemstones by means of film covering, irradiation and filling. It’s artificial after the treatment.
Optimization: The natural gem is optimized by heating, and it is still natural.
Burning and no burning is actually an optimized method of gem-quality corundum (not just sapphire), which enhances its clarity and color by heating the gemstone. This method has been widely used in the jewelry industry since its invention. About 90% of the blue sapphire pet memorial jewelry and ruby on the market has been heat treated, that is, “burned”.
Thermal optimization is called “one-time burn” in the gem industry, but the gemstone is heated in a high-temperature environment (400-1700 degrees) without adding any chemical components (the addition of beryllium, titanium and other elements to color the gem is called second burning, not natural). By heating once, the impurities such as rutile inside the gemstone are eliminated, and the transparency of the gemstone is enhanced, and the color of the gemstone (mainly saturation) can be improved by multiple heating. The gemstones arabic name necklace of various places in the world vary in heating due to different properties such as impurities. For example, pink sapphire in Madagascar is usually heated at 400 degrees.
As for how to distinguish between burning and no burning, the best way for is to rely on gemstone certificates. Some of the world’s most well-known laboratories, GUBELIN in Switzerland, GRS, AGL in the United States, Central Japan, and GIC in Lanka, all indicate whether they are heat treated.
There are not many world sapphire producing areas, mainly Myanmar, Sri Lanka, Thailand, Australia, China, etc., but in terms of gem quality, Myanmar and Sri Lanka have the best quality. Depending on the geological origin, it can be divided into two categories: one is sapphire produced in Myanmar, Sri Lanka and Kashmir, India. The other category is sapphire from Australia, Thailand and China. The sapphire of Myanmar and Sri Lanka is brightly colored in blue, containing silk-like rutile and fingerprint – like liquid inclusions. The silk-like rutile inclusions can produce six or twelve shots of starlight and are high quality gemstones. The sapphire produced in Australia, Thailand and China contains more iron and is colored by iron. Therefore, the color of the gemstone is very dark, and the reflection effect of the faceted gemstone is not very good. Generally, it needs to be heated and treated before it can be used.