A rare Qing dynasty painting, titled "The Blue Goats," heads to auction at Sotheby's Hong Kong with a high estimate of $19 ...

Maya blue is a highly unusual pigment because it is a mix of organic indigo and an inorganic clay mineral called palygorskite. The rich blue color does not fade over time; it has maintained its ...

Another piece of the Netherlands is now in downtown Holland. Dutch company Heinen Delfts Blauw has opened a storefront at 18 ...