Copper nuggets FLAT (SMALL) - 100 grams Blue Density: The density of calcite

Density: The density of calcite typically ranges from 2

Light Green Aventurine

with varying degrees of transparency depending on the specific variety

with a hardness ranging between 6

Color: Lapis lazuli typically displays a deep blue color with varying intensities

Copper nuggets FLAT (SMALL) - 100 grams Blue Density: The density of calciteLocality: Lake Superior Copper District, Michigan Lightly Tumbled Natural Nuggets Color: Copper typically has a reddish brown color when in its pure form, often described as "copper colored." However, it can develop a greenish patina over time due to oxidation. Hardness: Copper is a relatively soft metal compared to others on the Mohs scale, with a hardness ranging from 2. 5 to 3. This means it can be scratched or dented easily. Clarity: Copper is not