The Challenge: Identification of a Ramaura Synthetic Ruby
by Dr. Michael S. Krzemnicki, first published in F […]
Spinel from Mahenge (Tanzania) and its Heat Treatment
first published in Facette 22 (February 2016) In 2 […]
Undisclosed natural diamonds mixed in a parcel of synthetic diamond
by J.-P. Chalain, first published in Facette 22 (F […]
Colourless Diopside from Kenya and Canada
first published in Facette 22 (February 2016) Diopside, […]
Paraiba Tourmaline Intergrown with Lepidolite Mica
by Dr. M.S. Krzemnicki, first published in Facette 20 ( […]
CVD Synthetic Diamonds and Testing at SSEF
by J.-P. Chalain, first published in Facette 20 (Januar […]
寶石顏色的多樣化–分界線在哪裡？
理論上講很簡單：寶石是通過地質過程在自然界中形成的一種礦物，因此，它擁有礦物學的命名。該名稱是由國際礦物學協會（IMA）及新礦物命名和分類委員會（CNMNC） 定義的。在某些情況下，這些礦物名（例如鑽石）是為貿易商和消費
X-Ray Computed Microtomography at SSEF
by Dr. F. Herzog & M.S. Krzemnicki, first published […]