During the 2016 Tucson gem shows, Todd Wacks (Tucson Todd’s Gems, Tucson, Arizona, USA) showed author BML a yellow 11.13 ct tourmaline that he faceted from a piece of rough recently obtained on a buying trip to Tanzania by Sir-Faraz Ahmad (Farooq) Hashmi (Intimate Gems, Glen Cove, New York, USA). The rough material was reportedly found in October–November 2015 in the Landanai region of north-eastern Tanzania, in an area that is known for producing green ‘chrome’ tourmaline. The rough consisted of a round ‘nodule’ that showed a few crystal faces. In faceting the gemsone, Wacks cut a small table and a deep pavilion to maximize the colour appearance
Tourmaline is often overlooked as an indicator for exploration and there is generally a lack of info...
Tourmaline-supergroup minerals are ubiquitous accessory minerals in rocks of the Earth's crust. They...
Copper-bearing tourmaline from Mozambique was first recovered in 2001, but its Cu content was not re...
During the 2016 Tucson gem shows, Todd Wacks (Tucson Todd’s Gems, Tucson, Arizona, USA) showed autho...
During a buying trip to Tanzania in 2006, gem dealer Farooq Hashmi obtained some brownish yellow a...
The most important source of yellow gem elbaite is the Canary mining area in the Lundazi District o...
In September and December 2010, Dennis Durgin sent this author two fragments of recently mined Mt. ...
BACKGROUND: There are differences in the production characteristics, chemical composition, coloratio...
SUMMARY. Traces of a green chronfian tourmaline occur in calcareous rocks in contact with serpentini...
A recent Gem Note by Williams et al. (2017) documented green/brown dravite from the Commander mine, ...
ABstrACt Green to grayish green tourmaline crystals (up to 10 cm across), with distinct optical zoni...
Tourmaline was once considered to be no more than a collectable mineral, a semiprecious gemstone, or...
showed one of the authors (BML) some yellowish green crystals that he purchased as diopside while on...
Personal Shopper piece on the Maine state stone, tourmaline, including a short history of how and w...
Suites of gem-quality faceted tourmaline, slices and fragments from Nigeria Namibia, Mali, Tanzania...
Tourmaline is often overlooked as an indicator for exploration and there is generally a lack of info...
Tourmaline-supergroup minerals are ubiquitous accessory minerals in rocks of the Earth's crust. They...
Copper-bearing tourmaline from Mozambique was first recovered in 2001, but its Cu content was not re...
During the 2016 Tucson gem shows, Todd Wacks (Tucson Todd’s Gems, Tucson, Arizona, USA) showed autho...
During a buying trip to Tanzania in 2006, gem dealer Farooq Hashmi obtained some brownish yellow a...
The most important source of yellow gem elbaite is the Canary mining area in the Lundazi District o...
In September and December 2010, Dennis Durgin sent this author two fragments of recently mined Mt. ...
BACKGROUND: There are differences in the production characteristics, chemical composition, coloratio...
SUMMARY. Traces of a green chronfian tourmaline occur in calcareous rocks in contact with serpentini...
A recent Gem Note by Williams et al. (2017) documented green/brown dravite from the Commander mine, ...
ABstrACt Green to grayish green tourmaline crystals (up to 10 cm across), with distinct optical zoni...
Tourmaline was once considered to be no more than a collectable mineral, a semiprecious gemstone, or...
showed one of the authors (BML) some yellowish green crystals that he purchased as diopside while on...
Personal Shopper piece on the Maine state stone, tourmaline, including a short history of how and w...
Suites of gem-quality faceted tourmaline, slices and fragments from Nigeria Namibia, Mali, Tanzania...
Tourmaline is often overlooked as an indicator for exploration and there is generally a lack of info...
Tourmaline-supergroup minerals are ubiquitous accessory minerals in rocks of the Earth's crust. They...
Copper-bearing tourmaline from Mozambique was first recovered in 2001, but its Cu content was not re...