Copper Rutilated Quartz 5x8mm Chip with Spacers - 15-16 Inch Shape_Tube and the green color is

and the green color is caused by a reaction in the stone when the chrome is introduced to water

Green is the most common color for Aventurine

Agate is one of many varieties of banded Chalcedony

It is extremely fracture to resistant and has been used for blades and other tools since Neolithic times

5x7 mm / 0

Copper Rutilated Quartz 5x8mm Chip with Spacers - 15-16 Inch Shape_Tube and the green color isRutilated Quartz is a silicon dioxide mineral with unique needle to like inclusions of Rutile. These needles usually appear golden, but can also appear silver, red, copper, or black and can be distributed randomly or in bundles or star to like formations. Rutile is the mineral name for natural crystals of titanium dioxide, which may contain iron oxide. When the level of iron oxide is high, the inclusions appear more golden or copper, when it is low,