Gemology: D is for ...

When it comes to gemstones beginning with D, we all know Diamonds! But there are several more less-well known gemstone quality minerals beginning with D which can be just as beautiful, and in some cases even more valuable. Take a journey through the colourful world of gems beginning with D here.

Danburite Danburite is a clear crystal though it can also occur in shades of yellowish brown giving it an appearance similar to topaz. At the moment it's relatively unknown, but stay tuned - we predict this attractive little gem will be growing in popularity!

Brown Danburite Crystal and Polished Gem

Image Attribution: Rob Lavinsky, iRocks.com – CC-BY-SA-3.0 [CC BY-SA 3.0 (http://creativecommons.org/licenses/by-sa/3.0)], via Wikimedia Commons

Datolite

A pale green mineral gemstone, – though occasionally occurring in pinks – Datolite can be highly sparkly or vary through to opaque. It's somewhat brittle so not ideally suited to jewellery manufacture, but it can make a pretty ornamental piece for a desktop or home office.

Datolite Green Crystal Raw

Image Attribution: Rob Lavinsky, iRocks.com – CC-BY-SA-3.0 [CC BY-SA 3.0 (http://creativecommons.org/licenses/by-sa/3.0)], via Wikimedia Commons

Demantoid Demantoid is the most expensive member of the garnet family but unlike the garnet you may be more familiar with, this particularly valuable garnet is bright green. First discovered in Russia in 1868, Demantoid doesn't occur in large stones with stones over 2 carats being extremely rare. Unlike the majority of stones where inclusions can lower the value, the tiny inclusions of asbestos (looking like horsetails) that naturally occur in Demantoid can increase the value significantly.