Deep beneath Earth's surface and scattered across remote corners of our planet lie treasures so extraordinary that their very ...

From dazzling reds to electric blues, spinel’s unmatched brilliance, vibrant hues, and celebrity endorsements are making it the ultimate must-have for contemporary jewellery connoisseurs All that ...

Figure 1. Spinel is available in a wide range of colors, as seen in this suite of round gems weighing 1.47–6.70 ct faceted by Bill Vance. Photo by Robert Weldon/GIA; courtesy of Vance Gems. Spinel has ...

Gemological Institute of America (GIA) scientists discovered spinel treated by nickel diffusion in a parcel of stones it examined in its New York lab — a new development in the colored-gemstone market ...

Ancient builders had deep knowledge about environmental conditions and the physical needs of humans in their search for shelter. Regardless of technological advances and the evolution of our ...

The addition of a natural stone veneer feature is a beautiful improvement to a home’s décor. Inside or out, stone walls, a mantel piece, hearth or front door surrounds, and other applications create ...

Natural stone such as marble, onyx, travertine, and slate can add a touch of elegance to your home’s entrance hallway, kitchen counters, bathroom vanity and fireplace mantel. But many people shy away ...

The latest high jewellery collections from the world’s most luxurious Maisons are awash with coloured gemstones, with many of these providing kaleidoscopic whirls that fall outside the traditional ...

This faceted cobalt-diffused spinel (left) and polished plate from another sample (right) reveal the penetration of blue color produced by the treatment. Natural spinels colored by cobalt (Co) are ...