Gem Q&A

Expert insights on gemstone mining, valuation, luxury grading, and international market trends.

31 Questions
What is a “Doublet” or “Triplet” gemstone?

A doublet or triplet is a stone that is composed of two or more pieces. Often, a thin slice of a high-quality, expensive, or naturally...

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2 days ago
Why is the “Round Cut” the most popular?

The standard "Round Brilliant Cut" is the most popular style for diamonds and many other gems because it has been mathematically designed to reflect the...

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2 days ago
What causes internal “inclusions”?

Inclusions are like a gemstone’s "fingerprints." They are tiny bits of other minerals or liquids trapped inside the stone while it was growing underground millions...

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2 days ago
Can gemstone mining be “ethical”?

"Ethical mining" is a growing movement in the industry. It involves mining practices that are fair to workers (providing safe conditions and fair wages) and...

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2 days ago
Is there a “softest” gemstone?

Yes. While Diamonds are at the top (10), Amber is considered one of the softest, sitting at about 2 to 2.5 on the Mohs scale....

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2 days ago
What makes a gemstone “Eye-Clean”?

In the professional world of gem grading, "eye-clean" is a term used to describe a colored gemstone that has no visible inclusions (flaws) when viewed...

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2 days ago
What is “Adularescence”?

This is a beautiful optical effect seen in Moonstone. It appears as a billowy, milky-white, or soft blue light that seems to "glide" or float...

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2 days ago
Are Pearls actually “stones”?

Technically, no. Pearls are classified as organic gemstones because they are created by living organisms (mollusks like oysters and mussels). When an irritant (like a...

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2 days ago
What is “Play-of-Color” in Opals?

Opals are unique because they don't have a single solid color. When light hits the internal structure of an opal—which consists of tiny silica spheres—the...

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2 days ago
Hardness vs. Toughness: Are they the same?

Many people confuse these terms, but they are very different: Hardness: Measures a stone's resistance to scratching (using the Mohs scale). Toughness: Measures a stone's...

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2 days ago
What is “Fluorescence” in gemstones?

Some gemstones, particularly diamonds, have a fascinating property where they emit visible light when exposed to invisible ultraviolet (UV) rays. If you place a diamond...

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2 days ago
What is the “Cat’s Eye” effect?

Similar to a Star Stone, the Cat's Eye effect (scientifically called Chatoyancy) is an optical illusion where a single, sharp band of light sweeps across...

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2 days ago
How can you tell the difference between a Sapphire and a Ruby?

Scientifically, there is no difference! Both Sapphire and Ruby are exact same mineral: Corundum. The only difference is the trace elements present during their formation....

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2 days ago
Are there any gemstones found exclusively in one single place on Earth?

Yes! While stones like quartz and sapphires are found on multiple continents, some are location-specific: Tanzanite: A vibrant blue-violet stone found only in a small...

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2 days ago
What makes a gemstone sparkle?

A gemstone's sparkle is primarily determined by its Refractive Index (RI). This is a measurement of how much light bends when it enters the stone....

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2 days ago
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