Product｜Swiss Blue Topaz Quality｜Swiss Blue Topaz can be said to be one of the most popular gemstones today. The output of blue topaz is quite large and the origins are distributed all over the world. In addition, the Mohs hardness of topaz is as high as 8, which is higher than most gemstones in the world. This hardness makes topaz difficult to be damaged during daily wear and does not require special maintenance and care. The blue color that everyone loves, the affordable price and super durability are the main reasons why blue topaz can be deeply popular among the people. We recommend this blue topaz because blue topaz is made of colorless topaz using radiation light to change the color-causing factors inside the gemstone. The length and intensity of the exposure time will affect the depth of the color change to blue. Radiation exposure will inevitably leave residues. European and American countries have strict regulations that gemstones made of such radiation must be idle in an open place for 2 years until the residual radiation decays before they can be put on the market for sale. This one was made in Toronto, Canada, and has been shipped to Taipei Core Mine since the beginning of 2021. The time is far beyond the statutory safe storage period, ensuring that it is safe to wear. Net | VS1 - The overall appearance is light, transparent and clean to the naked eye, and the slight internal flaws can only be seen under a 10x magnifying glass. Amount | 4.70 carats. Women can make it into pendants, and men can basically still use it for men's rings, but the design requires experts to create it, because men's rings need to use harder, cooler, darker and grayer metal materials to balance the beautiful blue of the blue topaz, so as not to make it a bit feminine. If you need our cooperating designers to give advice or even make it, we can provide the cooperating and technically qualified excellent goldsmiths to help you design and make the ideal jewelry. Shape | 10.0mm diameter + 6.7mm | Round Fantasy Cut [Fantasy Cut Round Brilliant Style] Cutting level: EXCELLENT Color | Swiss blue