Black Tourmaline - Brazil - 10 pounds Rose Quartz as it often showcases intricate

as it often showcases intricate patterns and colors within the stone

Luster: Yellow opal can display a vitreous (glassy) to waxy luster

75 grams per cubic centimeter

Sizes & Colors vary

it can develop a greenish patina over time due to oxidation

Black Tourmaline - Brazil - 10 pounds Rose Quartz as it often showcases intricateMixed Sizes. Mostly multiple pieces per pound. Local: Brazil 1. Color: As the name suggests, black tourmaline typically exhibits a deep black color, although it can sometimes have a slight brownish tint. It often occurs in long, prismatic crystals, but can also be found in massive formations. 2. Hardness: Black tourmaline has a hardness of 7 to 7. 5 on the Mohs scale, making it relatively durable and resistant to scratching. 3. Clarity: Black