Technical Information on Gemstones
An Introduction to Gemstone Inclusions
What are gemstone inclusions? Have you ever looked at a gemstone and seen unique features within the stone? Learn all about inclusions and how to identify them!
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Approved Gemstone Testing Laboratories
Gem Rock Auctions has one of the largest range of Certified Gemstones online. Browse this list of approved gemstone testing laboratories.
- Admin Iris
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Aventurescence Or Gemstone Schiller
In the world of gemstones there are special types of stones that show the Schiller effect or Aventurescence. Lets explore what these gems are and how they behave
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Azotic Treatment Of Quartz And Topaz
Azotic treatment of Topaz and Quartz is a treatment that creates a layer of color over a gemstone. Learn more about this treatment and check out our stones fro sale.
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Blue Sapphires: What Makes Sapphires Blue?
The color of a Sapphire is cuased by different impurities inside the gemstone. Titanium for example creates the beautiful deep blue that we love so much in Sapphires
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Colored Gemstone Grading: What You Need to Know
While there is a strict scale to grade Diamonds on that was devised by the Gemological Institute of America (GIA), there is not an international standard for grading clarity in colored gems.
- Admin Iris
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Colour Changing Gemstones
Color changing gemstones are gemstones which change color in different lighting conditions. Learn more about these stones and browse our gemstones for sale.
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Emerald Inclusions - What The Inner World of Emeralds Can Tell You
Emerald Inclusions are fascinating. inside each Emerald the tiny inclusions tell a story about where the gem came from and how it formed.
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Four Tools For Gemstone Testing
There are so many tools on the market for testing a gemstone, but what are the main tools required for simple analysis. Lets look at four tools for gemstone testing.
- Admin Iris
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Gemstone Compliance
Compliance issues in the Gemstone Industry are affecting countries worldwide. Sellers will face audit requests to prove the legitimacy of their business.
- Wayne Sedawie
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Gota De Aceite Emeralds
Gota De Aceite Emeralds have a special feature which increases their value. Read more about this rare type of Emerald and learn how it adds to the value.
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How Do Gemstones Form?
How do gemstones form in the earths crust? It is far more complicated than first thought but we have broken it down to make it easier to understand
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How Do They Treat Ruby Gemstones?
Have you ever wondered how they treat Ruby gemstones? There are so many different types of treatments on the market and we will help to explain them
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How Does Alexandrite Change Color?
Alexandrite is one of the rarest gemstones on the planet. It has the ability to change colors under different light. Lets explore how it does that
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How To Test For Diffusion Treated Gems: A Step-By-Step Guide
How can you differentiate between natural and color-treated gemstones? In this guide, we’re sharing how to test for diffusion treated gems, and tools you’ll need.
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Is Amber a Mineral?
Amber is a gemstone, but it is not a mineral. Let's explore what makes Amber tick and why its not considered to be a mineral.
- Admin Iris
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L/W Ratio For Gem Cutting: What Is It and How To Use It?
When it comes to cutting gemstones, the L/W ratio is a vital measurement, but what does it mean? Find out how to master this common technique in this guide!
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Lapidary Fundamentals: All About Gemstone Faceting
Learning how to cut gemstones is a highly-specialized skill that takes years to perfect! Learn the fundamentals of gemstone faceting in this helpful guide.
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Lapidary Fundamentals: The Cabochon Cutting Style
A cabochon cut gemstone is polished to be ultra smooth: but how is it done, what tools are needed and what skills required? Learn all about cabochon cutting in this article.
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Lapidary Fundamentals: Tools and Techniques For Cutting Rough Stones
Cutting rough stones is a fundamental practice for Lapidaries, but the skills, tools and techniques required vary from project to project. Learn all the important details in this informative guide!
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MOHS Hardness Scale For Gemstones
The MOHS scale of hardness is universally used when describing gemstones. But what does it mean and how can you use it help protect your gems and jewelry
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Oregon Sunstone Durability And Hardness
The hardness of Oregon Sunstones ranges from 6.0 to 6.5 on the Mohs Scale. It’s a suitable for a wider variety of jewelry types because of its hardness rating.
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Pearl Treatments
There are many treatments for Pearls that change their apperance. Most of these treatments are acceptable. Learn more about this gemstone and browse the beautifully cut stones we have for sale.
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Phenomenal Gemstones — Gemstones with Optical Properties
Ever heard of phenomenal gemstones? These gemstones display amazing optical effects under different lighting, such as cats eyes and stars. Read more about these amazing gems..
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Physical Properties of Gemstones
Each gemstone has it's own unique set of physical properties that can be used to identify it. These include hardness, growth patterns and cleavage. Learn more about the physical properties of gemstones.
- Admin Iris
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Rainbows and Fire: What is Gemstone Dispersion?
Why do certain gemstones have a rainbow effect? What is gemstone dispersion? Learn about the amazing fire effect of gemstone dispersion and which gems have it.
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Sapphire Gemstone Treatments On Gem Rock Auctions
Sapphires listed on GemRock Auctions are categorized in regards to the treatment methods used. Learn how we deal with treatments.
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Sapphire Treatments
Sapphire Treatments refers to the process of improving the clarity, colour and value of Sapphires that have been mined out of the ground.
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The Four Cs Of Diamond Quality
The Four C's are a standard definition on how to describe and judge the quality of a Diamond. let us explain it in more detail.
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Types Of Quartz And The Enhancements Or Treatments Used
Quartz Crystal is one of the most common Minerals on Earth. It is one of the most loved gems and for centuries has been used for jewelery and carvings. Quartz Crystal is one of the most common Minerals on Earth. It is one of the most loved gems and for ce
- Admin Iris
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What are Synthetic Gemstones, Imitation and Simulants?
What are Synthetic Gemstones, Imitation and Simulants? We will explain the difference and how some of them are created.
- Admin Iris
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What Causes The Color In Oregon Sunstone?
Sunstone occurs in a range of colors that begins with colorless and ranges through to yellow, orange and red. The color is determined by the abundance and size of the copper platelets within the stone.
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What is a Carat And Is It Related To Karat?
Carat and Karat are two terms you will here in the Jewelry business that sound exactly the same. They have very different meanings though.
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What Is A Mineraloid
A mineraloid is a substance that is very similar to a mineral, but it does not demonstrate crystallinity.
- Admin Iris
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What Is Aquamarine Made Of?
Aquamarine is made of a Beryllium, Aluminium Silicate and is part of the Beryl family of minerals. Beryl can be many colors but when it’s blue or blue-green it is called aquamarine.
- Steve Thomas
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What is the Crystal Shape of Garnet?
The main crystal shapes of Garnets are dodecahedral and trapezohedral. Both shapes are polyhedrons, which are three-dimensional geometric figures with flat faces.
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