Blue Lace Agate or blue Chalcedony.
Calchedony has a waxy luster, and may be semitransparent or translucent. It can assume a wide range of colors, but those most commonly seen are white to gray, grayish-blue or a shade of brown ranging from pale to nearly black. The name chalcedony comes from the Latin chalcedonius (alternatively spelled calchedonius).
Indicate the kilos you want to buy chosing the quantity in the quantity tab.
It is possible that you have the option of taking less than kilo in the WEIGHT tab.
PRICE PER KG
Size: 8-15 cm. aprox.
