Amethyst Geode Cut Base - 605gm Brazil Raw Diagonal space between prongs is

Diagonal space between prongs is 6

Really pretty piece with a number of small rainbows - 165gm - 5cm diameter

75cm diameter - 49gm

fine geode points

Double Sided Tape on the reverse side for sticking to your wifi router

Amethyst Geode Cut Base - 605gm Brazil Raw Diagonal space between prongs isAmethyst Geode Free Standing Cut Base 605gm 10. 5cm x 10. 5cm x 8. 5cm Amethyst is a purple variety of quartz composed of silicon dioxide (SiO). It forms when quartz crystallises from silica rich fluids, most commonly in hydrothermal veins and in cavities within volcanic rocks such as basalt. Like all quartz, amethyst has a hardness of 7 on the Mohs scale. The purple colour is caused by trace amounts of iron within the quartz crystal structure,