Peridot — Gemstone Properties
Peridot is one of the few gemstones that forms in a single colour — a vibrant, grassy yellow-green caused by iron within its olivine mineral structure. Unlike most gems, peridot does not occur in sedimentary or metamorphic rock; it forms in the Earth's mantle and arrives on the surface via volcanic activity. It is one of the oldest known gems, found in Egyptian jewellery dating to 1500 BC. August's birthstone.
Why does Peridot only come in green?
Peridot is the gem variety of olivine — a magnesium iron silicate. Its green colour is caused by iron, which is an intrinsic part of its chemical structure rather than a trace impurity. This means it cannot occur in other colours; the range is purely from yellow-green to deep olive.
Is Peridot suitable for everyday wear?
Peridot rates 6.5–7 on the Mohs scale — adequate for most jewellery, but care should be taken with rings. It can be scratched by quartz (common in dust) and should not be worn during activities that risk impact. Best suited to necklaces, earrings, and occasional-wear rings.
What is Peridot associated with?
Peridot has long been associated with light, positivity, and protection. Ancient Egyptians called it "the gem of the sun" and believed it warded off evil spirits. Today it is linked to warmth, creativity, and reducing stress and anxiety.
How do I clean Peridot jewellery?
Warm soapy water with a soft brush is the safest method. Rinse well and dry gently. Avoid ultrasonic and steam cleaners — peridot can be sensitive to rapid temperature change and acidic substances. Store separately to prevent scratching.