As a result, China's gem trade has adopted the traditional term "fei cui" (pronounced 'fay choy') to cover all the pyroxene jades. Lotus Gemology has done the same starting on 1 July 2023, dropping the names jadeite/omphacite/kosmochlor in …

2023年12月12日 · Jade, notably Feicui, epitomizes an allure far beyond superficial beauty—it embodies a luminosity entwined with density and transparency, fundamental elements defining its essence. The compression and clarity within Feicui distinguish between the extraordinary and the ordinary within this revered gemstone.

2024年1月17日 · Fei Cui, Omphacite Jade is a microgranular to microfibrous polycrystalline aggregate. Its major mineral component is Omphacite [ (Ca,Na) (Mg,Al)Si2O6].

2020年11月12日 · What’s the difference between ‘jade’ and ‘fei cui’ and what do the terms “A Jade”, “B Jade” and “C Jade” mean in the trade? Tune in as Senior Staff Gemologist Xiaodan Jia from GIA Hong Kong covers the history, identification, treatments and nomenclature of this precious gem from an international gemological perspective.

Equipped with the most advanced instrumentation, including an infra-red spectrometer, the experienced gemmologists of HKJSL can test Fei Cui accurately and issue authenticated certificates to the public. Refers to Natural Fei Cui which has not been subjected to any form of chemical treatment.

Fei cui (sometimes fei tsui or fei-ts'ui) is the Chinese term that refers to the plumage of the kingfisher birds that have red (fei) and green (cui) feathers (Hansford, 1948). It is believed by Hansford (1948) that for centuries the term had been used to describe bright green nephrite due to the apparent similarity in color with the bird.

The name Fei Cui however covers a range of compositions of jade that include the minerals jadeite, omphacite and kosmochlor. It is a polycrystalline aggregate of one or more of the above clinopyroxenes with a compact structure.

Fei Cui (Kosmochlor Jade) is a granular to fibrous polycrystalline aggregate. It is composed of Kosmochlor (NaCrSi. 2. O. 6) as major mineral. It may contain other minerals such as minerals such as Jadeite, Omphacite, and other minerals. Clear differentiation of three Fei Cui members between Fei Cui (Jadeite Jade), Fei Cui (Kosmochlor

Fei Cui is a kind of jade that is defined as a granular to fibrous polycrystalline aggregate composed solely, or principally of any of the following or any combination of the following: jadeite, omphacite and kosmochlor (GAHK, 2016). For decades, Myanmar was the only source of “Imperial green” Fei Cui.

Fei cui jade is a relatively recent entry to the jade family, only entering China in quantity during the Qing Dynasty under emperor Qianlong [1711–1799]. While it lacks the rich history and creamy texture of nephrite, the “emerald” green color of Imperial fei cui jade is today even better known than nephrite. In contrast, the finest color of