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 …

Nov 12, 2020 · 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.

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

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.

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.

Nov 28, 2019 · 用“Fei Cui”代替Jadeite 是有学术上的必要性，也是符合市场上的要求的！ 对于统一市场是有好处。 事实上香港政府海关部门已接受这个名称并在在商品说明条例中写明︰翡翠（ Fei Cui）是由硬玉、绿辉石、钠铬辉石组成，可以是其中一种矿物或三种矿物组成的 ...

Dec 20, 2024 · 以往在某些地区曾出现过使用与翡翠发音相似或含义模糊的宝石产品，指代“类似翡翠的玉石”，现在统一为“Fei Cui”，能够清晰界定交易对象。 对于鉴定机构而言，国际标准名称也有利于建立统一的鉴定标准和数据库。

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.