Product｜Multi-color color-changing sapphire Quality｜<<Unheated>> This is a pleochroic sapphire with color-changing effect. To be honest, I still find it difficult to define its color. Although it has been tested in the laboratory and confirmed on the certificate that its main color is blue, the staff who have seen this stone think that the color is different. Some say it is purple, some say yellow, some say blue... and everyone's color is different after seeing it. The only consistent thing is that it will directly turn into a bright red under ultraviolet light, a very large color change difference, rather than a slight color change such as blue turning purple, purple turning pink... This sapphire produced in Sri Lanka is not only natural and unheated, but also has a very high clarity, reaching VS1 or VVS2, which is completely clean when visually inspected by the naked eye. The 2 carats with a lot of weight are the first choice for those who like light-colored sapphires. Most sapphires are easy to appear dark in indoor light or dark places, unless there is sufficient light source and preferably outdoor natural sunlight, then the most beautiful color of sapphire is presented. Many people are disappointed with the brightness of sapphires after buying them. If you cannot accept the black oily light that sapphires often have indoors, choosing light-colored sapphires will greatly eliminate the problem of "blackening" of natural sapphires mentioned above. The sub-diamond luster of light-colored sapphires is quite sharp and has good fire. Unheated and untreated gem-grade corundum has a Mohs hardness of 9, making it the second hardest substance in the world's natural world. It can be worn daily. Clarity｜VVS2 [It is flawless when viewed with the naked eye. This level of clarity is characterized by its subtlety. Even after the gem is magnified ten times, it is still difficult to fully see some of the inclusions in the gem] Volume｜2.01 carats Shape｜7.7 x 5.5 x 4.5 mm｜Radiant Rectangular Mixed Cut [Radiant Mixed Cut]・Cut grade: Very Good Color｜Blue and light yellow, two-color