Hematite (a silver metallic ore of iron) Labradorite (a variety of plagioclase feldspar with an iridescent luster) Malachite (a green banded mineral composed of copper carbonate) Moonstone (a variety of feldspar that displays adularescence) Nephrite (a variety of jade) Orthoclase (a white to pin...
Hematite Another essential mineral in our planet’s composition is hematite, which is also magnetic. Scientists have investigated its properties for a long time. Nowadays, this material has a wide variety of uses. However, it lacks popularity and economic significance as iron is more commonly used...
Composition:Microcrystalline quartz (chalcedony) with inclusions of iron oxide (hematite) and other minerals, which contribute to the fiery color. Higher water content (up to 10%) compared to other opal varieties gives it its unique properties. Color:Primarily vibrant orange, red, and yellow, ofte...