The Curator's Journal

After the Ban: Why Afghan and Tajik Rubies Are the Next Mogok

Myanmar is closed. Russia is frozen. The fine-ruby supply chain has rerouted through the Himalayan foothills — and the geology says the stones coming out are chemically identical to the ones that b...

The Vault, the Strongbox, the Free Port: Where Your Gemstone Position Actually Lives

Three tiers of custody. The insurance that actually covers them. And the single document that determines whether your collection reaches your heirs intact. A thousand-dollar safe has cost collecto...

Where to Buy Fine Coloured Gemstones in Toronto & Canada

If you are looking for a fine coloured gemstone in Canada — a GIA-certified sapphire, ruby, emerald or a rarer stone — the question quickly becomes who to trust. Skyjems is a Toronto-based coloured...

What Makes a Coloured Gemstone "Investment Grade"

"Investment grade" is one of the most-used and least-defined phrases in the gem trade. It is worth being precise, because the qualities that make a coloured stone genuinely enduring are specific an...

How to Buy a Fine Coloured Gemstone Over $10,000: A Collector's Framework

At the five-figure level, a coloured gemstone is no longer an impulse — it is a considered acquisition, and the difference between a wise purchase and an expensive mistake is almost always informat...

Optical Phenomena in Gemstones: Asterism, Chatoyancy & Colour-Change

Some gems do more than glow — they perform. A star glides across a sapphire's dome; a single bright line opens and closes across a cat's-eye; an alexandrite turns from green to red as you walk from...

Country of Origin & Coloured-Gem Value: Why It's on the Report

For a fine coloured stone, three documented facts set its value: what it is, whether it has been treated, and — increasingly — where it came from. Origin is the one buyers understand least and pay ...

Emerald Oil & Clarity Enhancement: No-Oil, Minor, Moderate Explained

Almost every emerald you will ever see has been oiled — and that is neither a secret nor a scandal. It is the oldest and most accepted enhancement in the gem world. What separates a fine emerald fr...

Heat Treatment in Coloured Gemstones: Disclosure & Why It Isn't a Flaw

Few words on a gemstone report carry as much weight — or as much misunderstanding — as "heated." Heat treatment is the most common enhancement in the coloured-stone world, it is centuries old, and ...

How to Read a GIA Coloured-Stone Report

For a fine coloured gemstone, the laboratory report is the document that protects its value — and the GIA coloured-stone report is the one the trade trusts most. But a report is only useful if you ...