Blue sapphire is caused by a small amount of titanium (Ti) and iron (Fe) impurities. The colors of sapphires can be pink, yellow, green and white, and even the same stone has many colors, but these kinds of sapphires are not very valuable. The only thing that is not blue and has no value is a pink orange sapphire called Padparacha or Padparadja.
Sapphire is produced in Thailand, Myanmar, Ceylon (Sri Lanka), Madagascar, Kashmir, Laos and Cambodia in Africa, among which the rarest sapphire is produced in Kashmir. Some gem experts also pointed out that there are only three places in the world that produce excellent sapphires: Myanmar, Sri Lanka and Madagascar. Blue sapphire from Myanmar is regarded as a treasure by collectors, and its color is reminiscent of the sky and the ocean. According to the Gemological Institute of America, medieval clergy would set blue sapphires on their priests' rings, because this color was a symbol of heaven.
? Among sapphires, there is a rare "starlight sapphire", which is very famous in history. There are needle-like fine impurities in it, which cause the optical effect called star mans, hence the name. Famous stars such as "Star of India" and "Black Star of Queensland" all made headlines.
? The 563-carat Star of India is probably the most famous starlight sapphire in the world. It appeared in a mine in Sri Lanka more than 300 years ago. It was once the collection of American financial giant J·P· Morgan. 1900, Morgan donated it to the American Museum of Natural History.
The 733-carat "Queensland Black Star" is the largest starlight sapphire in the world, which was discovered in Australia in A.D. 1930.
The Queen of England and her daughter-in-law love sapphires.