Umba, Valley of Sapphires

Stunning Sapphires of all Colors

Umba Valley in Tanzania has some spectacularly colored Sapphires, included but absolutely not limited to this purple specimen! Unheated Sapphires generally show trademark 'silk,' tiny rutile needles within the stone. You can see the silk in our pictures, showing as what looks like dust or tiny pinpricks.

When a Sapphire is heated, this silk tends to melt and add to the richness of the color. This Umba Sapphire, however, did not need heat treatment to show it's robust color! It's color doesn't change entirely, but rather shifts from daylight to incandescent. A pale violet with a halo of salmon, to a beautiful rich burnt amethyst. Lovely!

- Finch


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