Topaz is an aluminium silicate containing fluorine and hydroxyl. Purely, it is colourless (white) ; it is the impurities which cause the variations of colour. “Topaz ranges from colourless to yellow, orange, red-brown, light to dark-blue, pink to red, violet and light-green.” Furthermore, Topaz is distinguished by its hardness and its perfect cleavage. This fine…
Tanzanite is a variety of Zoisite (calcium aluminum silicate ) and has a colour varying from blue to violet. This stone is Heat treatments enhance the Tanzanite’s colours. This gemstone is named “Tanzanite” because a deposit was found in 1967 in Tanzania, East African country. Tanzanite is distinguished by a perfect cleavage (it cleaves “without…
Turquoise is a hydrated copper and aluminium phosphate. The colour varies from blue to blue-green. Turquoise is often mottled with cream or brown veins. Furthermore, the name “turquoise” comes from a confusion : when Venitian merchants brought this stone in France, it was called “Turkish stone”, from Turkey whereas it was from Persia. Besides, the…
The Amazonite (also named Microcline) is a variety of potassium feldspar (like moonstone). The name “Amazonite” comes from the Amazon River in Brazil. The colour varies from green to blue-green. This fine gemstone can be confused with Turquoise and Jade. Amazonite is found mainly in Colorado, Brazil, India, Kenya, Madagascar, Namibie, Russia and Zimbabwe. Jacquie…
Moonstone is a fine gemstone belonging to the silicate group and the feldspar family of minerals. Jean Claude Delamétherie discovered this stone in 1801. The moonstone is characterized by the adularescence : an optical phenomenum constiting in “a milky, bluish luster or glow originating from below the surface of the gemstone.” The moonstone is colorless…
In 1874, the Belgium orientalist painter Jean-François Portaels (1818-1895) realised this portrait. Source : http://art-magique.blogspot.fr/2011/05/jean-francois-portaels-1818-1895.html
Agate is a banded variety of chalcedony ; it belongs to the Quartz family of minerals. This gemstone is often formed by successive accumulations of various colours or tones. There are also single-colored agates. Agates can have various colours : black, white, blue, red, green, yellow, orange, brown, pink, purple and gray. There are many…
Andrea Fohrman is inspired by celestial objects such as moons and stars. The sky is reinterpretred by this talented designer. It is a lovely independant jewelry brand based in Los Angeles. I love the feminity and the cuteness of her jewels. There are also ravishing rainbows pendants. The website : http://www.andreafohrman.com/