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which makes it relatively durable and suitable for use in jewelry
black tourmaline exhibits a vitreous to sub-vitreous luster
and problem-solving
some specimens may exhibit slight translucency
fluorite might fluoresce blue or purple
Septarian - 10 pounds Rough Stone which makes it relatively durableSMALL PIECES ONLY Locality: Madagascar Color: Septarian nodules often display a unique combination of colors, including shades of yellow, brown, gray, and occasionally white. Hardness: The hardness of septarian nodules varies depending on the minerals present in the concretion. Calcite, for example, has a hardness of around 3 on the Mohs scale, while aragonite is slightly harder at around 3. 5 to 4. Clarity: Septarian nodules typically have a
US$ 29.93
US$ 135.00
US$ 15.00
