Emeralds from the Minas Canaã, Minas Gerais, Brazil
In September 2024, the SSEF had the privilege of testing a few emeralds from the Mina Canaã, some of which exhibited exceptional qualities. Impressive in terms of weight, clarity and colour, these stones had further been spared any treatments, thus meaning their attributes were entirely natural.
Gemmological characterisation of emeralds from Musakashi, Zambia
Zambian emeralds have been known for decades, primarily from mines along the Kafubu River in north-central Zambia (approximately 35 km south of Kitwe).
Gemmological Characterisation of Emeralds from Musakashi, Zambia, and Implications for Their Geographic Origin Determination
Gemmological Characterisation of Emeralds from Musakashi, Zambia, and Implications for Their Geographic Origin Determination. Journal of Gemmology, 2024, 39, 4, 338-350.
Bachelor thesis on fissure filling substances in emeralds
Fissures in emeralds are commonly filled with colourless substances such as oil, wax, or artificial resin to modify and enhance their clarity. This treatment is not new and has been known for many centuries, specifically with oil.
Dyed quartz imitating emerald
From time to time, we receive some oddities for testing, such as the rough “emerald”, reportedly originating from Africa and submitted by a client for testing. Already a quick visual examination made it clear that this was not an emerald. The surface was dominated by conchoidal fractures and covered partly
News from the SSEF (2022)
Presentation by Dr. Michael S. Krzemnicki at the Swiss Gemmological Society SGG conference in 2022.
A never-ending story: recheck service and report validity check on myssef.ch for emeralds
Imagine life as an emerald. Just born in the rocks and growing, you get joggled and bruised by mother nature and later by the mining process. So, already in your young age you carry quite some scars and fractures, which reduce your true beauty considerably and may not make it so easy to find a good mate (emeral
New emeralds from Musakashi, Zambia, appear on the market
New emeralds from Musakashi, Zambia, appear on the market. The Journal of Gemmology, 37(8), 769-771.
Emeralds from Riverina, Australia
In early 2019, an Australian client submitted a small series of gem- quality light green emeralds ranging from 2.01 – 5.80 ct in weight, which reportedly originated from the same rough crystal from the Riverina deposit in Western Australia (Figure 1). Known since the late 1970s (Whitfield, 1975), this deposit
A New Type of Emerald from Afghanistan’s Panjshir Valley
A New Type of Emerald from Afghanistan’s Panjshir Valley. Published in Journal of Gemmology, 2021, 37 (5), 474-495.