A stunning 25.22 carat copper- and manganese-bearing tourmaline, certified by GIA. This gemstone displays a beautiful greenish-blue color, reminiscent of classic Paraíba-type tourmaline. According to the GIA report, this gemstone may be referred to as "paraíba tourmaline" in the trade due to its copper and manganese content. The term “paraíba” originates from the Brazilian locality where such material was first discovered; however, similar gems can also come from other localities. This large and brilliantly cut gemstone is suitable for collectors, investors, or high-end jewellery making. Gemstone: Tourmaline (Copper- and Manganese-bearing) Variety: Paraíba-Type Tourmaline Color: Greenish Blue Cut: Modified Brilliant Cut Shape: Oval Transparency: Transparent Treatment: Not specified Weight: 25.22 ct Measurements: 23.45 × 17.49 × 10.66 mm Laboratory: GIA – Gemological Institute of America Report Number: 1455828250 Report Date: February 15, 2023