News Gemstore24 | Edelsteine & Dienstleistungen

By Fabian Kneipp / Friday September 15th, 2023

Tsavorite

Tsavorite has certainly been competing with emerald for the status of the most popular green gemstone for several years. Tsavorite...

By Nikolas / Thursday June 23rd, 2022

Hauyne

Formel: (Na,K)3(Ca,Na)(Al3Si3O12)(SO4,S,Cl) = Feldspathoid Colour: Colourless, greenishblue, blue Hardness: 5,5-6 Density: 2,44-2,5 Refractive Index: 1,494-1,509 Crystal System: isometric ...

By Fabian Kneipp / Sunday September 27th, 2020

Euclase

Euclase Euclase is a rare beryllium aluminum silicate. The chemical formula is BeAlSiO4(OH). Chemically Euclase is a nesosilicate with small...

By Fabian Kneipp / Sunday July 26th, 2020

Ethical sourced gemstones from Madagascar

Ethical sourced gemstones from Madagascar News Coloured gemstones have always been popular and at the same time they have a...

By Nikolas / Wednesday August 22nd, 2018

Benitoite

Formula: BaTiSi3O9 Colour: colorless, light to dark blue / after heat treatment bright peach pink to orange Hardness: 6-6,5 Density:...

By Nikolas / Monday July 30th, 2018

Formula: (Fe) Ca2Fe2+Al2B[4][O|OH|(Si2O7)2, (Mg)Ca2MgAl2B[4][O|OH|(Si2O7)2], (Mn) Ca2Mn2+Al2B[4][O|OH|(Si2O7)2] Colour: (Fe) shades of brown, violet with appropriate orientation, partially zoned with blue spots....

By Nikolas / Saturday July 7th, 2018

Afghanite

Formela: (Na,K)22Ca10(Si24Al24)O96(SO4)6Cl6 Colour: Colorless, different blue Hardness: 5,5-6 Densitiy: 2,55 Refractive Index: 1,523-1,529 Crystal System: Trigonal with strong dichroism light...

By Nikolas / Monday June 18th, 2018

Legrandite

Formula: Zn2[OH|AsO4]·H2O Colour: vivid yellow, colorless to orange Hardness: 4,5 Density: 3,98-4,01 Refractive Index: 1,675-1,740 Crystal System: monoklinic Vibrantly bright...

By Nikolas / Saturday June 16th, 2018

Poudretteite

Formula: KNa2B3Si12O30 Colour: Colourless, very pale to intense pink (rare) Hardness: 5 Density: 2,53 Refractive Index: 1,516-1,532 Crystal System: Hexagonal...