Nephrite Greek "λίθος νεφριτικός"; "νεφρός λίθος", which means 'kidney stone' and is the Latin and Greek version of the Spanish "piedra de ijada" (the origin of "jade" and "jadeite"). Accordingly, nephrite jade was once believed to be a cure for kidney stones. Besides the terms already mentioned, nephrite has the following synonyms and varieties: "aotea", "axe-stone", "B.C. jade", "beilstein", "kidney stone", "lapis nephriticus", "nephrit", "nephrita", pounamu, "New Zealand greenstone", "New Zealand jade", "spinach jade" (dark grayish green), and "talcum nephriticus". "Tomb jade" or "grave jade" are names given to ancient burial nephrite pieces that have a brown or chalky white texture
Empire Nephrite (Fabergé egg) have to date concerning the egg of 1902, which was previously mistaken for an "Egg from nephrite, on a gold base and with portrait of the Emperor Alexander III in a medallion". The egg is currently in a private collection in New York, USA. Empire Nephrite (Fabergé egg) The Empire Nephrite (sometimes mistakenly referred to as the Alexander III Medallion) egg is a jewelled Easter egg, one of the Imperial Eggs made under the supervision of the Russian jeweller Peter Carl Fabergé in 1901–1902 for Nicholas II of Russia, who presented it to his mother, the Dowager Empress Maria Feodorovna,