Amethyst large,full (tumbling)Brazil(state of Rio Grande do Sul)

The price per gram without a choice.
Tumbling ( extra class) of natural silica, a variety of quartz of purple or bluish-violet color.
Length from 26 mm - 40 mm
Width from 23 mm to -30 mm
Weight from 18 to 33,7 grams
The cost without a choice will be from 450 rubles to 843 rubles..
With a choice - by size, weight, pair selection, etc. - it costs from 540 rubles to 1011 rubles per unit.

Any stone can be "dressed" in a special spring for the stone(holder),so you get a ready pendant.
www.livemaster.ru/item/32005533-materialy-dlya-tvorchestva-pruzhinki-dlya-kamnya-krupnye-pod-serebristye.
www.livemaster.ru/item/32008713-materialy-dlya-tvorchestva-pruzhinki-dlya-kamnya-krupnye-pod-zolotistye..
Pure defect-free amethyst crystals are relatively rare and highly valued.
Great saturation,good transparency,there is a transparent area.
There is a weak pleochroism ( usually manifested in a change in color, hue or intensity of color of minerals when turning )in brownish-purple tones and weak luminescence (the ability of the mineral to glow under the influence of various kinds of radiation outside the waves of the visible part of the spectrum) in greenish tones.