Although the producers claimed that these stones were red diffusion-treated corundum (i.e., a shallow coloration induced by the lattice diffusion of chromium), the surface layer is actually a ...

Only during the last few years have the gem riches of Pakistan become known to the rest of the world. This article reports on three gem materials currently being mined: emerald, corundum (most ...

As a child, the future president acquired a marine animal's skull, which became the first specimen in his natural history collection Peter Zablocki In a new book, a curator at England's Natural ...

However, the best natural cat litter is another option. While clay litter tends to create dust that can irritate both cats and humans, natural litters are nearly dust-free and also more eco ...

We asked skin-care experts to share their favorite natural sunscreens—here's what they had to say. Our editors and experts handpick every product we feature. We may earn a commission from your ...

Cancer birthstone radiates emotional balance and intuition. Discover its healing properties, zodiac significance, and how it ...

Natural products are small molecules produced naturally by any organism including primary and secondary metabolites. They include very small molecules, such as urea, and complex structures, such ...

Natural sugar substitutes are a great way to sweeten your favorite treats while adding health benefits. It's easier to make the replacement than you think. Read on to see our top six natural sugar ...