Superb 6.83ct concave cut diamond white Quartz

Look at this amazing piece! Cut from pure AAA quartz, it exhibits a flawless diamond white hue that shines through its incredible clarity. It was precision faceted resulting in crisp and vibrant flashing, and with its intricate concave cut, you can easily see the flashing needles from across the room. Measuring 14mm x 10mm, it has incredible size and a Mohs hardness rating of 7 out of 10. Sourced from Brazil. Untreated!