Wholesale set of 4 huge natural blue topaz gemstones originating from Brazil. These weigh 79.50 CTS between the 4 stones and have been cut into emerald shapes. These have an average weight of almost 20 CTS each and an average size of 18 x 13 mm. These are almost exact matches but there may be some that very slightly different in size, for example some may be 17.9 mm or 18.1 mm in length. These stones have a glittering intense sparkle effect and a bright sky blue coloring. These are naturally earth mined gemstones and have been irradiated to enhance color. The gems are fully transparent and have superb clarity. There is no visible flaws or inclusions and these can be considered eye clean or near flawless clarity. Check out our other topaz listings : https://www.etsy.com/ca/shop/PurityGems?ref=simple-shop-header-name&listing_id=1040414937§ion_id=31235305&sort_order=price_desc Check out our full storefront and selection : https://www.etsy.com/ca/shop/PurityGems The name " topaz" originates from the Greek word " topazion " , which is translated from the Sanskrit word for " fire". Topaz is an ancient stone, mentioned in the Christian Bible, and scientists believe it existed in prehistoric times. Topaz is a silicate mineral consisting of aluminum and fluorine, and is yellow to golden brown in color when its in its natural state. Different impurities can alter the coloring to such things tones as red or pink, and the use of irradiation to enhance the stone to a vibrant blue is quite popular. All stones in our shop are naturally earth mined gemstones and are not lab created. All photos are taken naturally without editing. There may be some variation in the color or resolution depending on the device used to view this listing. We do our best to provide an accurate representation of the product. More pictures and videos available upon request. Don't hesitate to contact me with any questions or concerns.