Oco Geode Silver Plated Pendant with Black Tourmaline Rods (1.5 To 2 Inches) (4 Pieces) back-to-school diopside can sometimes contain chromium

diopside can sometimes contain chromium that turns it a bright green

Charoite is a purple silica mineral that is only found in one part of Siberia

Avg Size Range: (16 Inches)

Average size range: 5 to 20 millimeters

black kyanite also contains inclusions of graphite that have altered the color

Oco Geode Silver Plated Pendant with Black Tourmaline Rods (1.5 To 2 Inches) (4 Pieces) back-to-school diopside can sometimes contain chromiumWholesale Silver Plated Oco Geode Slice Pendant with 3 Black Tourmaline Rods Uniqueness Guaranteed: Every item is one of a kind, making them ideal for all projects or designs. Listing is for (4 Pieces) Avg Size Range: (1. 5 To 2 Inches) Sizes Vary Material Origin: (Brazil) Oco geodes form when groundwater deposits sediment and other minerals like quartz inside basalt pockets, which then seal over. These minerals harden in a similar process to agate,