Umbalite Garnet

The exceptional pink garnet from the umba valley


Umbalite Garnets are the exceptional pink to pinkish-purple Garnets named after the Umba Valley in Tanzania.

Umbalite is a relative of Rhodolite and Malaya Garnets. It is usually a mix of Pyrope, Almandine, Spessartine and occasionally Grossular Garnets. Almost all gem-quality garnets are a mix of two or more species.

The Umba Valley is a treasure trove of gems. Many different varieties of Garnets are found there including Malaya, Tsavorite, Grossular, Red, Rhodolite and the rare Color Change Garnets.

Other gems found in the Umba Valley include Fancy Sapphires, Rubies, Chrome and Dravite Tourmalines, and Red, Pink, Peach, Yellow and Champagne Zircons.

Garnets are part of a large family of silicate minerals that have similar physical properties but vary in chemical composition.

The name ‘Garnet’ derives from the Latin word for seed, possibly associated with the fruit Pomegranate whose seed covers resemble some Garnets.

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, celebrates the 2nd Anniversary and comes in almost all colors of the spectrum including the rare color-change material.

Lots of choice for January birthdays!

We have many more shapes and sizes available in Umbalite – please contact us if you don’t find what you are looking for in our online inventory.

click here to see a selection of Umbalite Garnet for sale


light pink

medium pink





Garnet, primarily Pyrope

Sometimes Pyrope-Spessartite with Grossularite and/or Pyrope-Spessartite with Almandine (Pyralspite)

and/or Pyrope-Almandine with Grossularite


RI = 1.74-1.788 SR – usually

SG = 3.75-4.05 – usually

Dispersion = 0.024-0.028

Hardness = 7-7.5

Highly suitable for use in jewelry


 Usually none

see policy on Treatment Disclosure

Important information

Rare – Especially in sizes above 3cts – only a few stones found every month

Colors similar to fine Rhodolite; however Umbalite usually has a lighter pinkish tone

Smaller stones are usually a lighter pink color; larger stones saturate towards reddish-purple






Calibrated sizes up to 5mm

All standard cuts and free sizes

Mining locations

Tanzania (Umba Valley, Mahenge)