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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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

Purple sits between red and blue, and small shifts in hue, tone and saturation change a stone completely. A gemologist...

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Oval mixed-cut natural pink tourmaline in a medium-dark slightly purplish pink with raspberry depth, photographed face-up on a pale gray background at Sapphire Row Gemstone Education
Sapphire Row

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

Pink runs from the barely-there blush of morganite to the hot raspberry of fine rubellite. A gemologist's guide to hue,...

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Oval mixed-cut red gemstone photographed face-up against a pale gray background at Sapphire Row, showing a vivid slightly purplish red with bright crown facets and a deeper crimson core Garnets
Sapphire Row

Red Gemstones: A Gemologist’s Guide to Choosing the Right Red

Ruby, red spinel, garnet and rubellite all read as red — but they behave very differently in color, durability and...

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Round star-cut citrine in a vivid yellowish orange with a warm honey-gold core, photographed face-up on a pale gray background at Sapphire Row, its pinwheel facet pattern radiating from the culet Gemstone Education
Sapphire Row

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

Orange has no single flagship stone — it has a scattered, competitive field of garnets, sapphires, zircons and topaz. Here...

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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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Heart-shaped brilliant-cut tanzanite in a medium to medium-dark violetish blue, held in polished stainless steel tweezers at Sapphire Row, showing violet flashes across the crown facets Aquamarine
Sapphire Row

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

Sapphire, tanzanite, aquamarine, spinel, cuprian tourmaline, zircon and apatite can all read as blue across a tray — and they...

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