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Technical Information on Gemstones

An Introduction to Gemstone Inclusions

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!
  • 1st May 2022
  • 5
Approved Gemstone Testing Laboratories

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.
  • Iris Administrator
  • 1st May 2022
  • 10
  • 2
Aventurescence Or Gemstone Schiller

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
  • 1st May 2022
  • 1
Azotic Treatment Of Quartz And Topaz

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.
  • 1st May 2022
  • 2
Blue Sapphires: What Makes Sapphires Blue?

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
  • 1st May 2022
  • 7
Colored Gemstone Grading: What You Need to Know

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.
  • Iris Administrator
  • 1st May 2022
  • 4
Colour Changing Gemstones

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.
  • 1st May 2022
  • 2
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Emerald Inclusions - What The Inner World of Emeralds Can Tell You

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.
  • 20th May 2022
  • 13
Four Tools For Gemstone Testing

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.
  • Iris Administrator
  • 1st May 2022
  • 27
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Gemstone Compliance

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
  • 1st May 2022
  • 4
Gota De Aceite Emeralds

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.
  • 1st May 2022
  • 7
How Do Gemstones Form?

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
  • 1st May 2022
  • 4
How Do They Treat Ruby Gemstones?

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
  • 1st May 2022
  • 22
How Does Alexandrite Change Color?

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
  • 1st May 2022
  • 3
How To Test For Diffusion Treated Gems: A Step-By-Step Guide

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.
  • 1st May 2022
  • 2
Is Amber a Mineral?

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.
  • Iris Administrator
  • 1st May 2022
  • 4
L/W Ratio For Gem Cutting: What Is It and How To Use It?

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!
  • 1st May 2022
  • 1
Lapidary Fundamentals: All About Gemstone Faceting

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.
  • 1st May 2022
  • 2
Lapidary Fundamentals: The Cabochon Cutting Style

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.
  • 1st May 2022
  • 1
Lapidary Fundamentals: Tools and Techniques For Cutting Rough Stones

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!
  • 1st May 2022
  • 1
MOHS Hardness Scale

MOHS Hardness Scale
The Mohs scale describes how hard a gemstone is based on scratch resistance. It’s important for gem cutting, identification, and protection. Find each mineral’s hardness in this guide!
  • Iris Administrator
  • 1st May 2022
  • 9
Oregon Sunstone Durability And Hardness

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.
  • 1st May 2022
  • 1
Pearl Treatments

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.
  • 1st May 2022
  • 5
Phenomenal Gemstones — Gemstones with Optical Properties

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..
  • 1st May 2022
  • 3
Physical Properties of Gemstones

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.
  • Iris Administrator
  • 1st May 2022
  • 8
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Rainbows and Fire: What is Gemstone Dispersion?

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.
  • 1st May 2022
  • 2
Sapphire Gemstone Treatments On Gem Rock Auctions

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.
  • 1st May 2022
  • 2
Sapphire Treatments

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.
  • 1st May 2022
  • 16
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The Four Cs Of Diamond Quality

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.
  • 1st May 2022
  • 8
Types Of Quartz And The Enhancements Or Treatments Used

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
  • Iris Administrator
  • 1st May 2022
  • 3
What are Synthetic Gemstones, Imitation and Simulants?

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.
  • Iris Administrator
  • 1st May 2022
  • 9
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What Causes The Color In Oregon Sunstone?

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.
  • 1st May 2022
  • 2
What is a Carat And Is It Related To Karat?

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.
  • 1st May 2022
  • 3
What Is A Mineraloid? Minerals vs. Mineraloids & Examples

What Is A Mineraloid? Minerals vs. Mineraloids & Examples
Mineraloid gemstones resemble minerals but don’t form crystals. They’re often organic, like pearls, amber, and coral. Learn how they differ from minerals and which gems are mineraloids!
  • Iris Administrator
  • 1st May 2022
  • 2
What Is Aquamarine Made Of?

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
  • 1st May 2022
  • 3
What is the Crystal Shape of Garnet?

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.
  • 1st May 2022
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