The Exhibition “Pierres précieuses” with Van Cleef & Arpels in Paris (2020) (3)
Sources : futura-sciences, collection-mineraux
Hot pink !
My necklace with Pink onyx, pink Swarovski beads. I designed the pattern ; the flower is a camellia.
Think pink !
I designed the pattern and the necklace (pink opal beads, pearls, citrine and cyanite.). Flower from one of my photos.
Dans un écrin de lumière
Hélène Courtaigne-Delalande ring and photo made with photoshop based on my photo of the Galeries Lafayette in Berlin. More photos made by photoshop :
Paraiba tourmaline jewelry
Paraiba tourmaline is a copper-bearing tourmaline. The name comes from the location where the stone was discovered : in the Brazilian state of Paraiba (city of Sao Jose da Batalha). This fine gemstone had been found in 1989 by the miner Heitor Barbosa. The vivid blue green colour of the paraiba tourmaline is unique. It is the rarest…
Opal jewelry
Opal is an hydrated silicum dioxide which reveals rainbow colours which change according to the angle of view. Opals exist in many colours : colorless, white, yellow, orange, red, yellowish brown, greenish, blue, gray, black and violet.
Iolite jewelry
Iolite is a magnesium aluminium silicate and has a blue-violet colour. This fine gemstone is found in Brazil, India, Madagascar, Myanmar, Sri Lanka and in the United States. Furthermore, the name comes from the greec word “ios” meaning “purple”. The Viking sailors used the iolite as a polarizing filter in order to find the sun…
Amethyst jewelry
Amethyst belongs to the macrocrystalline branch of the quartz group of minerals. The amethyst’s colour varries from purple and violet to pale red-violet. Its colour comes from the iron and aluminium impurities. Furthermore, this fine gemstone is found mainly in Brazil but also “in Bolivia, Canada, India, Madagascar, Mexico, Myanmar (Burma), Namibia, Russia, Sri Lanka, United…
Lapis Lazuli jewelry
Lazurite is a feldspathoid silicate and belongs to sodalite group of minerals. It is a blue stone which can vary from “greenish blue to violetish, from medium to dark and from low to highly saturated”. This fine stone is found mainly in Afghanistan but is also found in Angola, Argentina, Canada, Chile (North of Santiago),…
Blue topaz jewelry
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 jewelry
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…
Amazonite jewelry
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 jewelry
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…
