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 precious opal cabochon photographed against black at Sapphire Row, showing vivid green, blue, orange and red play-of-color across a translucent grayish white body - the traditional October birthstone Birthstones
Sapphire Row

October Birthstone: A Gemologist's Guide to Opal and Tourmaline

October has two birthstones, and they could hardly be less alike. A gemologist explains how opal's play-of-color actually works, why...

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Round brilliant-cut unheated Tanzanian sapphire in a medium bluish green teal, held in stainless steel tweezers at Sapphire Row, showing yellowish green and blue-green color zoning across the crown — the September birthstone beyond classic blue Birthstones
Sapphire Row

September Birthstone: A Gemologist’s Guide to Sapphire

Sapphire is the September birthstone — and it comes in every color except red. A working gemologist’s guide to sapphire...

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A hand holding an open black gem box of loose pastel pink faceted gemstones, including a square step cut, a large pear and four ovals, with trays of loose colored gemstones behind at Sapphire Row August Birthstone
Sapphire Row

August Birthstone Guide: Peridot, Spinel and Sardonyx

August is the rare month with three birthstones: peridot, spinel and sardonyx. A gemologist's guide to what makes each one...

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