Topaz is the birthstone for November, a stone of friendship, a symbol of peace, and carries the expectations of friendship. Topaz is the perfect price and the colors you love - blue. Blue Topaz is mostly made of natural colorless topaz with radiation heat treatment, and the color is stable. The blue topaz is divided into several common Sky Blue, Swiss Blue, and London Blue; the sky blue topaz stone is used to describe the color of a stone like a light blue sky, and the light blue sky is easily relaxed. Topazite is 8 with a hardness and commonly known as topaz, is the most hardest among gemstones, because it is relatively large carats and fancy cuts. Kindly Reminder: We sell all natural gemstones, hand selected before shipping, try to provide you with clean and beautiful stones. Besides, all the stones are hand cut, there will be some errors in the size, can not be consistent, I have the marked size range, please measure with a ruler or pen before you buy it will be more detail and please do not imagine the size yourself. Size: 3.90~4.10mm, Weight: 0.26~0.34ct