Round brilliant-cut amethyst in a vivid reddish purple with violet-purple flashes around the crown, photographed face-up on a pale gray background at Sapphire Row
Amethyst
Sapphire Row

Purple Gemstones: A Gemologist's Guide to Choosing the Right Purple

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Emerald-cut Zambian emerald in a medium slightly bluish green with strong saturation, held face-up in polished steel tweezers at Sapphire Row, showing wispy jardin veils and healed fissures across the table Emeralds
Sapphire Row

Green Gemstones: A Gemologist's Guide to Choosing the Right Green

Emerald is only the beginning. A gemologist's guide to green gemstones - what causes the color, how emerald, tsavorite, green...

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Emerald-cut vivid slightly bluish green Zambian emerald held in warm gold-toned tweezers at Sapphire Row, showing whitish jardin veils and mossy internal texture across the table Colored Gemstones
Sapphire Row

Gemstone Origin: Why Where a Stone Was Mined Changes Its Value

Origin is the one value factor you cannot see in a stone. Here is how Burma, Mozambique, Kashmir, Colombia and...

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Emerald-cut vivid slightly bluish green emerald held in warm gold-toned tweezers, showing whitish jardin veils and mossy internal texture across the table Colored Gemstones
Sapphire Row

Gemstone Clarity Explained: Which Inclusions Matter and Which Don't

Clarity in colored stones is not a ladder you climb. A guide to which inclusions are expected in which species,...

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Vivid green oval-cut natural emerald held in jeweler's tweezers, an example of investment-grade color at Sapphire Row Colombian Emeralds
Sapphire Row

Emeralds as Investments: The Complete Guide to Value, Rarity, and Long-Term Growth

What makes an emerald investment-grade? A gemologist's guide to the quality factors, origins, treatments, and certification standards that drive emerald...

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Emerald-cut teal blue sapphire held in jeweler's tweezers, showcasing the durability of corundum gemstones Durability
Sapphire Row

Gemstone Resilience: A Complete Guide to Durability, Hardness, and Care

Beauty is only part of what makes a fine gemstone worth owning. Learn how hardness, toughness, and stability determine gemstone...

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