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Internal Structure of Jadeite Jade


Microcrystalline Structure of Jadeite Jade

The internal structure of Jadeite Jade comprises very minute granules of monoclinic microcrystalline crystals inter-locked against each other.  This creates a lot of capillary spaces in between each of the micro-crystals.

The EPMA - Electron Probe Micrco-Analyzer

When a small surface area of a Jadeite Jade is examined under an EPMA (Electron Probe Micro Analyzer) equipment, the resulting EPMA chart which can be magnified up to 100,000X shows the cross-section of the jade piece to be like a mosaic tile floor with cement in between.  In the case of the internal structure of jadeite jade, the ‘cement’ are not the opaque mix but are the spaces in between each of the inter-locking crystals, that is the capillary spaces.

Coating The Specimen With Paladium Before the EPMA scan

To do further analysis with Jadeite Jade, I had the opportunity to work with a senior professor in a university to use the EPMA.  The Electron Probe Micro-Analyzer is a micro-beam instrument used primarily for the in situ non-destructive chemical analysis of minute solid samples. The primary importance of an EPMA is the ability to acquire precise, quantitative elemental analyses at very small “spot” sizes primarily by wavelength-dispersive spectroscopy. The spatial scale of analysis, combined with the ability to create detailed images of the sample, makes it possible to analyze geological materials and to resolve complex chemical variation within the specimen mineral.

An EPMA Scan Of A Mineral

Hence, Jadeite Jade is a very porous stone.  This makes it an ideal candidate for dye injection and polymer impregnation to enhance its clarity or to add color with polymer resins into the capillary pores.

Further discussion on dye or polymer impregnated Jadeite Jade will come up in later post.

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I am a Graduate Gemologist trained at the Gemological Institute of America (GIA) in New York City, USA. I hold an MBA degree from Cranfield University, United Kingdom, and a Bachelor degree in Mathematics. My earlier profession was a banker until I found jade in Myanmar (Burma) in the early 90s. I have traveled to the fabled Hpakan Jade mines, and Mogok, the world’s famous rubies and sapphires mines in upper Burma, with my second son. Three of my children are also Graduate Gemologist, GIA, NYC and they deal in diamonds, gemstones and jade. 我是在美国纽约市的美国宝石学院(GIA)接受过培训的宝石研究学家。 我拥有英国克兰菲尔德大学的工商管理硕士学位和数学学士学位。我以前的职业是银行家,直到90年代初我在缅甸接触到玉石。我曾经和我的次子一起去过缅甸上流传说中的哈帕翡翠矿山和莫谷矿山, 莫谷矿山是世界上著名的红宝石和蓝宝石矿山。我的三个孩子都是纽约市GIA毕业的宝石研究学家, 他们专门处理钻石,宝石和玉石.


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