All about the Tourmaline – The official October birthstone

Apr 09 2015 0 Comments Tags: birthstone, buying, information, october, tourmaline




Tourmaline is the official October birthstone. If you were born in October – or if you are just a gemstones lover as me, probably you would like to know a little bit more about the Tourmalines, one of the most beautiful and exciting gem in the world.

I will take advantage that is October and publish a sequence of information and interesting facts about the lovely Tourmalines. First of all, lets start with some basic knowledge to get use little by little to the gem.

The Tourmaline's name derives from the Singhalese word “tura mali”, which means “mixed stones”. It is really the perfect name for such a versatile gemstone, right? Yep, tourmaline comes in nearly every shade one can find on a colour!

 

 

Just some samples…

 

-       Rubilite: From mid to deep reds resembling ruby

-       Indiocolite: From bright blue hues to bluish green colours

-       Chrome: Rich green

-       Watermelon: Green skin and a red core

-       Canary: Bright yellow tourmaline 

-       Paraíba: Rare blue-green. Amazing Bright neon hues.

 

 

And much more… just add the colour name + tourmaline….Purple, pink, black etc…

 


Here is a little bit about the Tourmalines gemmology: 
Tourmalines have a very complex chemical composition, and more than a dozen mineral species are recognized within this group. Their highly variable chemical composition gives rise to a wide range of colors. Tourmalines are under the category of Cyclosilicate

-       Moh’s Hardness: 7 – 7.5

-       Crystal System: Trigonal.

-       Luster: Vitreous, sometimes resinous

 

 

 

 

Regarding the clarity, different varieties of tourmaline tend to have different clarities. Just a general rule, which I find interesting:

-       Blue and blue-green colors: is common to find clear specimens.

-       Red and pink tourmalines: in general show eye-visible inclusions.

Most common inclusions: fractures, liquid-filled healed fractures and needle.


Most tourmaline are untreated, although heavily included tourmalines, such as Rubellite and Brazilian Paraiba, are sometimes clarity-enhanced.

 

To my delight, gem and specimen tourmaline is mined chiefly in Brazil and Africa.

-       Brazil: Almost every color of tourmaline can be found in Brazil, especially in the Brazilian states of Minas Gerais and Bahia.

-       Africa: Mainly in Nigeria, Mozambique, Tanzania, Kenya, Namibia and Zambia. African Tourmalines are generally paler and less saturated than the Brazilian’s, although the material generally is less included.

In addition to Brazil and Africa, Tourmalines are also mined in USA, Afghanistan, Pakistan, Sri Lanka, and Malawi.

 If you take a look at our shop, you will find some nice samples of this beautiful stone!

 

 



Newer Posts →

0 comments

Leave a Comment

Please note: comments must be approved before they are published

From Our Blog

Custom Gemstones from Gemstones Brazil

Jul 12 2017 0

Custom Gemstones from Gemstones Brazil

                                                           ...

Read More
Introducing the exciting new member of our gemstone collection: the imperial topaz!

Jun 07 2017 0

Introducing the exciting new member of our gemstone collection: the imperial topaz!

   The imperial topaz is also known as ‘precious topaz’, as it is the most sought-after and rarest  natural topaz. It represents less than 0.5% percent of facet-grade topaz found in...

Read More
Go the extra mile for your loved one with a custom-made engagement ring

Jul 10 2016 0

Go the extra mile for your loved one with a custom-made engagement ring

Nothing says thoughtful like an engagement ring you have designed yourself. The very best part of running Gemstones Brazil is being an intrinsic part of creating the perfect ring for...

Read More
July's birthstone is Ruby

Jul 04 2016 0

July's birthstone is Ruby

It won't surprise you to know that rubies are known as the "king of gemstones" in Sanskrit ('ratnaraj'). They are endlessly regal - indeed, it is the most prominently-featured stone in...

Read More

To add this product to your wish list you must Sign In or Create and Account.