Slovakia, a landlocked country in Central Europe, covers an area of 49,000 km² and has a population of 5.4 million. Its terrain is mostly mountainous, especially in the north and central regions, ...

Recent mining at Opal Butte in northeastern Oregon has produced a wide variety of large flawless opals. The most common gem-quality varieties are hyalite and rainbow opal, but the less common ...

South Jersey Industries (SJI) and Opal Fuels have cut the ribbon on their Atlantic County Utilities Authority (ACUA) renewable natural gas (RNG) facility in Egg Harbor Township, New Jersey. The event ...

Vivid hues and striking silhouettes combine in new high jewellery from Van Cleef & Arpels, Cartier and Tiffany & Co ...

Vibrant and nuanced coloured gemstone jewellery reflects the changing season, but is also becoming a permanent addition to ...