August Birthstones: Peridot, Spinel & Sardonyx

August is represented by peridot, spinel and sardonyx. Their different colours and textures make the month more varied than a single green square on a birthstone chart suggests. Here is how to understand the three names and turn that knowledge into a thoughtful jewellery choice for an August birthday or another meaningful date.

What are the three August birthstones?

Peridot is known for yellowish-green to green colour. Spinel appears in a much wider palette, including red, pink, purple and blue. Sardonyx combines bands of sard and onyx, often contrasting reddish-brown or orange tones with lighter or darker layers.

Each offers a different visual reference: fresh colour, bright sparkle or distinctive banding. They should not be treated as alternate names for one material, and an August-labelled piece does not necessarily contain any of these natural gems.

August birthstone meaning and history

Sardonyx has a long history in carved seals and cameos and has been associated with courage and communication. Spinel was historically mistaken for ruby, including in famous royal jewels. These stories add context, but neither folklore nor a birth month determines a person’s character or wellbeing.

For a personal gift, choose a connection that belongs to the recipient. August could mark a birthday, a shared summer memory or the arrival of a new family member. A colour they genuinely enjoy is a better guide than a rigid rule about which of the three stones they must prefer.

Styling August’s green-inspired palette

A peridot-inspired green detail works naturally with ivory, tan, navy and light denim. Try it as the only coloured accent in a simple outfit, or repeat a similar green once in another accessory. Warm gold tones give the combination a soft, sunlit feel.

Think about proportion as well as colour. A small pendant is easy to layer when the chain lengths are clearly different. For a recipient who rarely layers jewellery, a single meaningful piece may be the more useful gift. Check dimensions and fastening details before choosing.

An August-inspired gift from Savaé

The Birthstone Cross Necklace has birth-month options made with cubic zirconia and an 18K gold-plated finish. Its August option celebrates the month through colour and symbolism; it is not a natural peridot, spinel or sardonyx necklace.

Choose a cross only when its shape and symbolism suit the wearer. For other personal gift ideas, explore the birthstone jewellery collection. A short card explaining your choice can connect the jewellery to a person or memory without making unsupported gemstone claims.

Care for the actual stone and finish

Peridot needs protection from hard wear and should not be steam- or ultrasonic-cleaned. Spinel is harder, but fractures can affect cleaning safety. Sardonyx may be dyed, so excessive heat is best avoided. Gentle soapy water is a common starting point for these gems, subject to the setting and treatment.

For the gold-plated cross necklace, use its own care guidance instead: keep it dry, avoid cosmetics and chemicals, wipe with a soft cloth and store separately. Do not assume gemstone-specific cleaning methods suit every month-inspired design.

Continue through the birthstone calendar

Compare August with the other months in our birthstone jewellery guide. For the next month’s tradition, explore September’s sapphire birthstone.

Gemstone reference: GIA’s August birthstone guide.