November 2019

Traditional Oxireducing Method - Zircon Heat-treatment Part (ii)

Zircon Heat Treatment Part (ii) – Traditional Oxireducing

Danushka
November 27, 2019
Sri Lankan lapidaries are not only specialized for free size and precision cutting but has the capability in producing stones as small as 1mm, 2mm, 3mm of a millimeter with zero or very low tolerance according to technical drawings supplied by the customers. At present, Sri Lankan lapidaries are catering to a highly prestigious clientele in the watch and jewellery industry including Rolex, Mont Blanc, Bvlgari, Cartier, Tiffany & Co., etc.

Traditional Gem Bearing Gravels Washing and Washing by Machines

Danushka
November 25, 2019
Natural Fluorite rough Stone - Danu Group

Fluorite

Danushka
November 24, 2019
madagascar sapphire - Danu Group

Madagascar Sapphire

Danushka
November 23, 2019
Natural fibrolite-sillimanite sri lanka

Fibrolite

Danushka
November 22, 2019
Natural Kornerupine Rough Gemstone from Sri Lanka

Kornerupine Big Rough Stone

Danushka
November 21, 2019
Natural Bi-Color spinel octahedron crystal from Sri Lanka

Bi-Color Spinel Octahedron Crystal

Danushka
November 19, 2019
Natural Green Onyx Colour: Green Shape: Oval Cut: Cabochon Weight : 7.00 Cts Dimension : 13.9 x 11.1 x 6.5 mm Treatment: Unheated Clarity: Translucent Green Onyx is a member of the Quartz Family that has different colors and various properties and characteristics. It's A variety of Agate. Agate and onyx are both varieties of layered chalcedony that differ only in the form of the bands: agate has curved bands and onyx has parallel bands. Green Onyx can be found in Afghanistan, Australia, China, Canada, France, Germany, UK, India, Madagascar, USA. • Crystal system: Trigonal • Chemical formula: SiO₂ • Hardness (Mohs hardness scale): 6.5 - 7 • Mineral class: Chalcedony • Transparency: Translucent, Opaque • Specific gravity: 2.6–2.65 • Optical properties: Uniaxial/+ • Refractive index: 1.530 to 1.543 Main Healing Properties This Silicate mineral vibrational energy help to reduce tension, stress, and fears. also, It's green color energy increases attraction and stimulates heart chakra energies. also, Green Onyx balances blood circulations all of the body as well as Carnelian increases blood circulation. Healing Properties Green Onyx is associated with Heart Chakra and the planet Mercury. It helps to develop your public speaking ability, creativeness and also encourage you to express your feelings and thoughts. This stone creates a bridge between the upper three chakras and the lower three chakras. This green soothing stone has the power to reduce you all worries, tension, stress, and fears

Green Onyx

Danushka
November 15, 2019
Sulfur is a chemical element with an atomic number of 16 and an atomic symbol of S. At room temperature it is a yellow crystalline solid. Even though it is insoluble in water, it is one of the most versatile elements at forming compounds. Jupiter's moon has over 400 active volcanoes that emit enormous amounts of sulfur - so much sulfur that the moon has a yellowish color. Sulfur reacts and forms compounds with all elements except gold, iodine, iridium, nitrogen, platinum, tellurium, and the inert gases. Sulfer has many colours like Yellow, Brownish yellow to greenish yellow. Red when molten at over 200 degrees Celsius. Burns with a flame that can be difficult to see in daylight but is blue in the dark. Sulfer Crystals are resinous to greasy. Sulfer About 90% is used to manufacture sulfuric acid. The remainder is used in a variety of products that include hydrogen sulfide, insecticides, herbicides, fungicides, pharmaceuticals, soaps, textiles, papers, processed rubber, gunpowder, leather, paint, dyes, food preservatives. - Mohs Hardness = 1.5 to 2.5 - Specific Gravity = 2.0 to 2.1 - Diaphaneity = Transparent to translucent - Crystal System = Orthorhombic - Chemical Classification = Native element Elemental sulfur can be found near hot springs and volcanic regions in many parts of the world, especially along the Pacific Ring of Fire; such volcanic deposits are currently mined in Indonesia, Chile, and Japan. 

Sulfur

Danushka
November 14, 2019
Blue Sapphire is a color variety of mineral corundum. The intense blue of the sapphire is caused by the addition of titanium and iron to the mineral corundum. Blue Sapphire color can be described in terms of hue, saturation, and tone. It is evaluated based upon the purity of their blue hue.

Blue Sapphire Rough Gemstones

Danushka
November 13, 2019