Water Clear Quartz Crystal with Diamond Shaped Window and Rainbows, Minas Gerais, Brazil Natural Crystal richterite Beautifully banded carnelian / orange

Beautifully banded carnelian / orange agate cabochon wrapped in copper that has been oxided and polished

but they also have an interesting formation process

A black light will not work well on these specimens

Size: 105 x 9 x 7 mm

exhibit tenebrescence and can change from colorless to pink

Water Clear Quartz Crystal with Diamond Shaped Window and Rainbows, Minas Gerais, Brazil Natural Crystal richterite Beautifully banded carnelian / orangeClear quartz crystal with a diamond shaped window, rainbows in that same area at the upper portion of crystal, and a reverse time link window. Size: 57 x 33 x 15 mm. 62 grams. From Minas Gerais, Brazil This one was hand picked. There are some minor dings along the edges.