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...

Read More
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:...

Read More
By Nikolas / Monday July 30th, 2018

Axinite

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....

Read More
By Nikolas / Thursday July 12th, 2018

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 Hauyn (pronounced...

Read More
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...

Read More
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...

Read More
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...

Read More
Close

Cart

No products in the cart.