Collection: August Birthstone Jewelry

The only gem with one colour

Peridot is olivine, and it is unusual among gemstones in having no colour range worth speaking of. Sapphire comes in every shade, tourmaline in more, garnet in several — peridot comes in green. The only variation is how much yellow is in it, running from a light lime through to a deeper olive. That is the whole spectrum.

The reason is structural: the green is caused by iron in the mineral itself, not by a trace impurity that could vary. It is the stone's own colour rather than a contamination. Which makes peridot faintly honest in a way most gems aren't.

It also has an odd origin story. Peridot has been found in meteorites — genuine extraterrestrial gem material — and most terrestrial peridot forms deep in the mantle and arrives via volcanic activity. It is not a stone that forms politely near the surface.

What August's stone is for

Peridot's traditional job was warding off envy, nightmares and what older texts vaguely call "the terrors of the night". Egyptian sources describe it as a sun stone, worn for protection against darkness in both senses. It is one of the very few stones whose historical meaning has stayed stable for thousands of years rather than being reinvented in the last century.

It sits at the heart, but the warm and open register rather than the tender one that rose quartz occupies. Peridot's version of heart energy is lightness — letting something go, stopping the comparison, being less clenched about it. A fitting stone for late summer, the point in the year where things are meant to be easy and frequently aren't. The August peridot guide goes further into the meaning and the styling.

Genuine stone and peridot-green glass

Genuine peridot is available and reasonably priced at small sizes, which is where most jewellery sits. Larger clean stones climb quickly.

Peridot green is also a very easy colour to reproduce in glass, and glass turns up widely in this shade — sometimes labelled honestly, sometimes not. Every listing here states which it is: genuine stone, lab-created, or a look-alike standing in for the colour. Peridot-green glass is called peridot-green glass. It is a legitimate material and it is never sold as the stone.

Handle it gently

This is the one genuine caution with peridot. At 6.5–7 on Mohs it is softer than most coloured gems, and more importantly it is brittle — it has poor toughness and can chip or fracture from a knock or a sudden temperature change. Never put it in an ultrasonic cleaner. Never run it under hot water after cold.

Warm water, mild soap, soft cloth, dry properly. Pendants and earrings are the safer settings; a peridot ring wants taking off for anything physical. Full routine in the crystal care guide.

Wearing it

Yellow-green is a decisive colour and it behaves very differently by metal. Gold amplifies the yellow and makes peridot look warm and vintage. Silver cools it and pushes it toward lime, which reads far more modern. Against navy or charcoal it pops; against olive or brown it disappears, so keep it away from its own colour family.

For an August birthday, studs or a pendant are the safe choice — nothing to size, and the setting metal does most of the styling work.