Mali Garnet ( Ugrandite)
A highly dispersive garnet named after the country where it was found
Mali Garnets are named after the West African country Mali where they are found. They are very bright with unusually high dispersion.
Like most gem quality garnets these are formed from a mix of different species of garnet. In this case three species – uvarovite, grossular and andradite, with a gemological name ‘Ugrandite’.
Andradite has dispersion that is greater than diamond, and dispersion is the optical property that splits light into its component colors. That explains all those flashes of color when we look at these beautiful gems!
Garnets are part of a large family of silicate minerals that have similar physical properties but vary in chemical composition.
Pure Garnet would be colorless; it is the trace elements that give garnets their colors. For example, iron and chromium create reds and greens; chromium and vanadium create greens, and manganese creates pinks and oranges.
Garnet is the birthstone for January and comes in almost all colors of the spectrum including the rare color-change.
Lots of choice for January birthdays!
We have many more shapes and sizes available in Mali Garnet – please contact us if you don’t find what you are looking for in our online inventory.
|Garnet, Ugrandite (a mix of Uvarovite, Grossular and Andradite)
RI = 1.735 (-0.035, +0.015) SR
SG = 3.61 (-0.27, +0.12)
RI = 1.875 (=/-0.020) SR
SG = 3.84 (=/-0.03)
dispersion=0.057 (much higher than Diamond which is 0.044!)
suitable for use in jewelry
100% natural garnet which is not normally treated in any way
see policy on Treatment Disclosure
Rare – in all sizes and colors
Calibrated sizes up to 5mm