You can sometimes find these gleaming white quartz pebbles on beaches. The stone on the right has been polished, and the one on the left is natural. When it is wet, it gleams nearly as much as if it was polished.
Whitre opaque pebbles||
The blue colour in this agate is caused by copper salts. The patterned chalcedonies are often called agate.
|Name:||Blue Lace Agate|
Pale blue chalcedony with delicate white patterns on it.|