How to judge the origin of sapphire
2024-05-09
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The color, transparency, color saturation, and shape of the stone will be affected by the origin of the gem. These differences are derived from the different geographical environments given to the formation of gems by different origins. To be as accurate as possible to distinguish the origin of the gem requires a professional spectrometer, or a microscope to distinguish the unique inclusions. However, in general, there are still many gems from different origins that can be judged by the naked eye. I will introduce the characteristics of sapphires from different origins.
Six famous producing areas
Kashmir (Kashmere)
Indian Kashmir sapphire is famous all over the world. After a large number of mining in 1861, it has been discontinued. Occasionally, some Kashmir blue treasures can be seen entering the market again at auction, which often becomes the focus of collectors.
Kashmir's sapphire is soft blue, beautiful color is often called cornflower blue (Cornflower Blue), blue with indigo purple. The sapphire of this origin often has obvious color bands (growth bands with concentrated colors), and it is also common that many tiny needles are densely arranged to form areas lacking transparency, resulting in a Milky White reflective effect on the appearance of the gem, which looks like soft velvet, so it is also called velvet blue.
2. Sri Lanka
Sri Lanka, which has a rich production of colored gemstones, produces sapphires of high quality and high transparency. The color is generally not too deep, and the blue color often has a purple tone. The sapphires from this origin are famous for the famous commercial name Royal Blue (Royal Blue).
Sapphire mining in Sri Lanka has a long history and rich resources. The world's largest sapphire and the third largest star sapphire are also from Sri Lanka.
Myanmar (Myanmar)
The impact deposit on the north side of the famous red treasure producing area of Myanmar, is the largest production area of blue treasure in Myanmar. The origin of the sapphire stone is generally flat, so after cutting the thickness of the gem is shallow, often have light leakage problem (the gem does not look sparkling).
Myanmar sapphire color is generally darker, more content, the market is not like Sri Lanka or Madagascar sapphire to see.
Thailand (Thailand)
Thai Blue Treasure is generally very dark in color, occasionally with very weak purple tones as well as gray tones. The ribbon is obvious and often has obvious needles, and there are many inclusions, so it is rare in the high-end sapphire market.
Madagascar (Madagascar)
Many people first heard of Madagascar because of the DreamWorks animated film, in fact, Madagascar is the world's top several behind an African island country.
Between the 1990 s and 2000, very rich deposits of Sapurah were discovered in Ilakaka and Sakaha, Madagascar.
Sapphires of this origin are generally darker in color, but have good transparency and often have a slight purple hue. It is often compared to Sri Lankan sapphires.
Recently, Madagascar has also mined sapphires (Kashmere-like) that resemble Kashmir. SSEF in Switzerland has also issued a document reminding jewelers to pay attention when trading.
6, Australia.
The color of Australian blue treasure is generally not very attractive, common gray blue, or green blue, the color is very deep, the crystal is also small, rare large carat number, so rarely used with jewelry, jewelry is more common.
Summary
The characteristics of each place of origin mentioned above are only for reference, and do not mean that the gems of the place of origin must have the characteristics I mentioned. If a more certain certificate of origin is required, it is recommended to send the gems to an internationally renowned appraisal center to issue a certificate.
More importantly, I hope you don't have the myth of origin. For example, Kashmir will also produce sapphire with poor quality, and Thailand will also produce sapphire with high quality quality. Therefore, when we buy a gem, we should not only pay attention to its origin, but also to see whether the gem itself is beautiful and suitable for us. (Buy gemstone,not buy certificate.)
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