Peridot: Meaning, Colour, Properties & Jewellery Guide

What Gives Peridot Its Green Colour

Iron is an essential part of peridot's chemical composition and is responsible for its characteristic yellow-green colour. Unlike many gemstones where colour comes from trace impurities, iron is a fundamental component of the olivine mineral structure itself. This means that peridot naturally occurs only within the green colour range, with variations in tone and saturation depending on the iron content.

Peridot Colour and Appearance

Peridot stones can range from yellowish-green to richer grass-green shades. The intensity and tone of green can vary, with some stones displaying a more golden-yellow hue whilst others show a deeper, more saturated green. Unlike gemstones such as sapphire or tourmaline, which can occur in a wide variety of colours, peridot naturally occurs only within the green colour range.

The most desirable peridot typically displays an attractive green colour with minimal unwanted brown tones, though colour preference can be subjective. Transparency and clarity also contribute to a stone's overall visual appeal.

Peridot Durability

With a Mohs hardness of approximately 6.5–7, peridot is suitable for use in jewellery, including earrings, necklaces, pendants, bracelets and rings. However, it requires more care than harder gemstones such as sapphire (Mohs 9) or ruby (Mohs 9).

Rings worn frequently should be protected from hard knocks and scratching, particularly if worn during activities that may expose the stone to impact or abrasion. Peridot can also be vulnerable to thermal shock, so rapid or uneven temperature changes should be avoided.

Where Peridot Forms

Olivine, the mineral of which peridot is the gem variety, can originate deep within the Earth's mantle. It can be brought towards the surface through volcanic activity, where it may be found in igneous rocks such as basalt. Peridot can also occur in certain metamorphic rocks.

Recognised peridot sources include Myanmar, Pakistan, China, Tanzania, Vietnam and the United States. Geographical origin alone does not determine gemstone quality; factors such as colour, clarity, cut and overall appearance are more important when evaluating individual stones.

Factors That Influence Peridot Quality

Several factors contribute to the quality and appearance of peridot gemstones:

• Colour: Stronger, attractive green colour with minimal unwanted brown tones is generally desirable
• Clarity: The presence and visibility of inclusions can affect appearance
• Cut: Proportions and finish influence how light interacts with the stone
• Carat weight: Larger stones are less common, though size alone does not determine quality
• Transparency: Better transparency typically enhances visual appeal
• Overall visual appearance: The combined effect of all factors determines how attractive a stone appears

Natural peridot can contain inclusions, which are internal characteristics formed during crystal growth. The presence of inclusions alone should not be treated as proof of authenticity, as synthetic materials can also contain inclusions.

Peridot Treatments

Peridot is not commonly treated compared with many other gemstones. However, this does not mean that all peridot is untreated. Any known treatments should be disclosed where relevant. If you have questions about a specific stone, it is appropriate to ask the seller for information about any treatments that may have been applied.

Caring for Peridot Jewellery

To keep peridot jewellery looking its best, clean it with warm water, mild soap and a soft-bristled brush or cloth. Rinse thoroughly and dry with a soft, lint-free cloth.

Avoid:

• Harsh chemicals and acids
• Hard impacts
• Abrasive cleaners
• Rapid or uneven temperature changes
• Steam cleaners
• Ultrasonic cleaners

Peridot can be vulnerable to thermal shock, so avoid exposing it to sudden temperature changes. Store peridot jewellery separately from harder gemstones that could scratch it.

Peridot Meaning and Symbolism

Throughout history, peridot has been associated with protection, prosperity and good fortune in various cultures. These associations are cultural or historical traditions and should not be interpreted as healing, medical or supernatural claims. Peridot is one of the recognised birthstones associated with August.

Peridot vs Emerald

Whilst both peridot and emerald can be green, they are completely different minerals with different properties. Peridot is a variety of olivine, whilst emerald is a variety of beryl. Emerald is significantly harder (Mohs 7.5–8) than peridot (Mohs 6.5–7) and typically displays a different shade of green. Emerald's green colour comes from trace amounts of chromium and sometimes vanadium, whereas peridot's colour comes from iron as an essential component of its structure.