Gemstone Guides

Lab-grown gemstones are physically identical to natural stones. But are they the same thing? Here's an honest breakdown of the differences that matter.

Heat, oil, beryllium, glass-filling — gemstone treatments are widespread and often misunderstood. Here's what each means for quality and value.

Tanzanite is found in only one place on earth — a 4km strip of land near Mount Kilimanjaro. What makes it unique and why prices have risen.

Colombia produces the finest emeralds on earth. But not all Colombian emeralds are equal — the mine of origin can double or triple a stone's value.

A GIA grading report is the gold standard of gemstone documentation. Here's how to decode every field and what to look for before you buy.

Tanzanite shifts from violet to blue depending on the light. Here's why it does that, where on earth it comes from, and why both facts matter to buyers.

Both are blue. Both are beautiful. But they couldn't be more different in value, rarity, durability, and what they mean as a purchase. Here's how to decide.

Tanzanite is a 6.5 on the Mohs scale. That means it needs a different care routine than diamonds or sapphires. Here's exactly what to do — and what to never do.

Almost every emerald has inclusions. The industry even gave them a French name — jardin, meaning garden. Here's what to look for, what to avoid, and why eye-clean emeralds are rarer than diamonds.

Not sure what carat size to pick for a tanzanite ring — or what it should cost? Here's the straightforward breakdown: carat weights, price-per-carat ranges, and what actually moves the needle on value.