Peridot 3.56 cts

Peridot’s green is produced solely by iron within its crystal structure — a relatively rare case where a single element is entirely responsible for a gem’s colour, without any chromium or vanadium involvement. The saturation ranges from a pale yellowish-green in iron-poor stones to a rich, deeply saturated olive in high-iron specimens, with the most prized examples leaning toward a pure, vivid green with only the faintest yellow undertone. Stones sourced from Zabargad Island and the Himalayas of Pakistan tend to display the most sought-after mid-to-deep green saturation.

Peridot does not typically exhibit phenomena such as asterism or colour change, but it is well regarded for its strong double refraction — one of the highest among transparent gemstones — which gives faceted stones a subtle depth and a characteristic softness to their internal reflections. Under magnification, well-formed lily-pad inclusions (fluid-filled discs) are a recognised internal feature of natural peridot and can actually help confirm authenticity. The gem also has a relatively high refractive index that, when well cut, produces a lively, warm lustre distinct from cooler-toned green stones.

Peridot rates 6.5 to 7 on the Mohs hardness scale, which places it in a category that warrants some mindfulness during daily wear — it is better suited to pendants, earrings, and occasional-wear rings than rings subject to constant abrasion. The stone is sensitive to rapid temperature changes and prolonged acid exposure, so ultrasonic and steam cleaners should be avoided in favour of gentle cleaning with warm soapy water and a soft brush. Storing peridot separately from harder stones such as sapphire or diamond will prevent surface scratching over time.

Peridot remains relatively accessible compared to the top-tier precious stones, but fine specimens above 3 carats with strong colour saturation and good clarity are increasingly difficult to source, particularly from the historically significant Zabargad deposit, which has seen limited production in recent decades. Certification from recognised laboratories such as GIA or Gübelin is particularly valuable for larger or higher-quality stones, as it documents origin, natural status, and confirms the absence of treatments — peridot is generally not treated, which is itself a mark in its favour. As collector interest in untreated, well-documented gemstones continues to grow, fine peridot at meaningful carat weights holds a credible place in a diversified gem portfolio.