Nephrite "hei-tiki" (neck pendant). These are believed to have their own "mana", are handed down as valuable heirlooms, and often given as gifts to seal important agreements. It has also been used for a range of tools such as adzes, as Māori had no metal tools before European contact. Commonly called "greenstone", jade jewellery in Māori designs is widely popular with tourists. Stone is often imported from Canada, China and Siberia, and Ngai Tahu runs a pounamu certification scheme to verify the authenticity of New Zealand stone. Nephrite Nephrite is a variety of the calcium, magnesium, and iron-rich amphibole minerals tremolite
Ornamental bulbous plant in the 5th Century. Many ornamental bulbs were introduced into Europe via Turkey and the Ottoman Empire. Sultan Suleiman the Magnificent (who reigned 1520–1566) was noted for his love of gardens, where tulips and other bulbs were grown. Ogier Ghiselin de Busbecq, the ambassador to the sultan from Emperor Ferdinand I in Vienna, observed ornamental bulbous plants such as narcissi, hyacinths and "those which the Turks call tulipam". The botanist Carolus Clusius, who was based in Vienna from 1573 to around 1580, devoted one volume of his 1576 botanical work "Rariorum Plantarum Historia" to bulbs, some of which he knew