Jewellers' Network

Category: Gemstones

J.P.P.E – THE BIRTHSTONE FOR MAY IS EMERALD

The word Emerald is derived from the Greek word “Smaragdos” which means “green stone”. The Emerald is a member of the Beryl (beryllium aluminium silicate) family. Elements of chromium in the crystal produce the colour, while inclusions in the stone create what is called the jardin, or garden, of the emerald. Continue reading…


It’s Time To Invest In Yourself

Well, there’s no denying that summer is now behind us, and we’re heading full speed into autumn and winter. A couple of the more traditionally hectic periods on the jewellery calendar – such as Christmas and Valentine’s Day –  are behind us for the moment, so you should have a little more time and energy on your hands right now. Continue reading…


Ethiopia: A New African Treasure Trove

First printed in ‘Gems and Jewellery’

Cell: 082 490 0219   |   Tel: 011 465 0208
Email: info@agemlab.co.za  |   Web: www.agemlab.co.za
Address: Suite 8, 4th Floor, Block E, The Pivot Office Park, Montecasino, Fourways, JHB Continue reading…


Quartz Crystals by Arthur Thomas

ARTHUR THOMAS

Fellow, Gem-A(GtBr)  /  Graduate gemologist GIA (USA)  /  Certified Evaluator (SA)
Email: arthurthomasgems@gmail.com  /  Tel: (011) 784 0172  /  Cell: (082) 469-6024 Continue reading…


J.P.P.E – April Birthstone – Diamond

The Birthstone of April is diamond. For these lucky ladies they get a gem that’s 58 times harder than anything else in nature but the allure of diamonds is mostly because of its lustre that sparkles and dances in the light. As a wedding ring it symbolizes the strengths of a happy marriage with eternal love.

The largest rough diamond discovered was the Cullinan diamond, weighing in at 3106 carats. Continue reading…


Join Us On Our Jewellery Valuation and Basic Gem ID Courses

These days, we’re noticing that insurance companies are getting much stricter when it comes to jewellery valuations. You really don’t want to do your clients a disservice by incorrectly valuing their jewellery, only to then have the insurance company query that valuation in the event of a claim being made. Continue reading…

JPPE – AQUAMARINE

Aquamarine, birthstone of march is from the family of beryl which is a harder gemstone and makes it suitable for everyday wear.

The name aquamarine was given because of its beautiful pastel blue and hints of green and is reminiscent of the seawater.

Continue reading…


Costly Gem ID Errors

Misdiagnosis is never a good thing. When you go to a doctor, you expect to have your symptoms identified – and you want the right treatment for what ails you. A mistake can be frustrating – not to mention extremely expensive.

Misidentification can be just as expensive in the gemstone world. I’ve started seeing more and more costly mistakes being made by people trying to identify gemstones without consulting a professional. The thing is: testing gemstones is not always a straightforward process. The refractometer readings simply can’t distinguish between natural and synthetic stones. Continue reading…


Mineral Crystal Rock Trade Fair

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February Birthstone – Amethyst

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If you are fortunate to have a birthday in the month of love then Amethyst with its purple colours that range from a blend of deep violet and red to lighter lilac hues, will make a stunning birthday gift.

It is said to be the stone of Saint Valentine, who wore an amethyst engraved with the figure of his assistant, Cupid and it’s said that the signet ring worn by Cleopatra was an amethyst, engraved with the figure of Mithras, a Persian deity symbolizing the Divine Idea, Source of Light and Life. Continue reading…


2018 Courses – New Beginning

2018 Courses – New Beginning

The value of a gemstone is tied to a number of factors. Telling what these are takes knowledge and many years of experience. A gemstone is only worth what it can be sold for, and that depends heavily on whether its authenticity can be proven. The best way to prove the worth of the stones you’re selling is to ensure each one is certified by an internationally recognised professional certifying body. Including a printed certificate of authenticity with your gemstones means you’ll be able to close more sales – and for a higher value.  Continue reading…


SPINEL, THE MASQUERADER UNVEILED

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Spinel, composition magnesium aluminium oxide, occurs in the same deposits and exhibits the same hues as the aluminium oxide gems ruby and sapphire so that for centuries it was confused with them. 

This was the case with the fine 170ct cabochon cut red spinel set above the Cullinan II in the Imperial State Crown of England. This is a stone with a long and chequered history. It was first recorded in the mid-fourteenth century as belonging to Abu Said, the Moorish Prince of Granada. Continue reading…


Feldspar by AGL

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Over 50% of the earth’s crust is made up by a large group of rock-forming silicate minerals that we call feldspar. 

The name was derived from the German word ‘feldspat’ meaning ‘field rock’. Feldspar has many uses from ornamental stone carvings, granite counter tops and fine jewellery pieces to its use in the production of glass and ceramics as well as a component in some paints, plastics and rubber. In 2010 alone, about 20 million tonnes of feldspar was produced. Continue reading…


JPPE – Tanzanite

TANZANITE IS ONE OF THE RAREST GEMSTONES ON EARTH.

Found only in Tanzania, this African gemstone has a beautiful range of colours, from deep blue to light blue and lilac, indigo and violet. Continue reading…


Gemlab – What’s in a name?

Correct Identification Is The Name Of The Game! 

When she said that “a rose by any other name would smell as sweet,” Juliet was obviously not talking about gemstones! Her argument was that didn’t matter what name Romeo had, he was just as valuable to her. This might well be the case when it comes to true love, but the same logic can definitely not be applied when we talk about gemstones! Continue reading…


Citrine

Citrine, the birthstone of November with the fire of the sun is known to bring hope strength, vitality and energy to the wearer.

This rich golden colour gem has made it a stunning summer birthstone jewellery gift.

Continue reading…


Gemlab – A Great New Course To Help You Make The Grade

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Winter is over, and I know many people in the jewellery trade will be very thankful to see the back of it. For some of you, winter was a very bad season business wise. Yet strangely, it was a great time for others. I’ve been asking myself why this is. Why do some jewellers do really well, while others struggle?  Continue reading…


Opal and Tourmalines

Opal and Tourmalines are the modern birthstones for November.

Opal are unique because the spheres of silica diffract the light to give off an iridescence of colour making each one unique in its own way. This makes it wonderful birthday gift. Continue reading…


Exciting New Developments From The Gem Lab

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The Gem Lab has been providing a unique service to the gem and jewellery industry for over 25 years, and we are 100 percent committed to continuing to do so. But, as with any business, it’s important to stay on top of new developments – and, when it comes to the gemstone industry, there are always plenty! Continue reading…


Emerald and other varieties of Beryl

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The occurrence of emerald is relatively rare because this mineral is only formed under very specific and unusual geological conditions.

Continue reading…