Jasper or Turquoise gemstone donut pendant, maybe modern.

speckled dark blue Impression Jasper or Turquoise gemstone donut pendant with brown mineral (ø 39 mm / 3-4 mm high, 12,40 g), holed 5 mm, maybe modern.

The mother rock or matrix in which turquoise is found can often be seen as splotches or a network of brown or black veins running through the stone in a netted pattern; this veining may add value to the stone if the result is complementary, but such a result is uncommon. Such material is sometimes described as "spiderweb matrix"; it is most valued in the Southwest United States and Far East, but is not highly appreciated in the Near East where unblemished and vein-free material is ideal (regardless of how complementary the veining may be).