Sapphire and Diamond Deco Cluster Ring

A hard-working female-led design brand, Ana de Costa creates modern heirlooms. Ana's designs involve decadent use of colour, and confident silhouettes, testament to her love of the 1920s, and in particular the Art Deco and Art Nouveau movements. Creating an exclusive series of one-of-a-kind pieces specific to each client, the highest level of care and craftsmanship is taken during the process.

Most commonly found in shades of blue, sapphires are also available in pretty much every other colour you can think of, with pink, yellow, peach and green being the most popular after blue. Sapphires are also very hard, with their rating on the Moh’s Scale falling just under diamonds, so they make great gemstones for daily wear on the hand.

The quality and therefore price of sapphires is based on their colour, cut and clarity, and large stones can be GIA certified as diamonds are.

The colour of the sapphire is by far the most important of all these. The shade, the tone and the depth of colour, as well as the uniformity of the colour - how well the shade is spread over the stone evenly - make a huge difference to price. Deep, dark coloured tend to hide the sparkle of the stone, so become less desirable, and sapphires that show a pure, even colour and brightness will be more expensive.

You may see sapphires where there are two different shades of colour in the stone. This is called a bi-colour sapphire, and is very common. Pure coloured sapphires with a rich, even tone in a single hue are the most conventionally desirable varieties, and therefore the most expensive. Common ‘cheaper’ sapphire rings found online will often feature lesser quality gemstones and the images may have been digitally altered, so make sure you always see a coloured gemstone in real life before buying.

Depending on the size requirements sapphires make a beautiful alternative to coloured diamonds. Yellow sapphires, white diamonds and yellow gold are currently a popular choice, but our favourite sapphire shade is a murky olive green.

Sapphires are traditionally the birthstone of September. See all Sapphire rings here.

Cushion cut diamonds are 4 sided in shape, with the corners 'cut off' to form a softer silhouette, like a pillow. They are found in a variety of square or rectangular shapes, and whereas they don't tend to emit as much pure white sparkle (brilliance) than their round counterparts, they have a lot of 'fire', which is an effect produced when light disperses into rainbow colours within the stone.

One of our favourite cuts for its soft, pillowy shape, the cushion cut diamond looks great set on its own in a wider, curved band, or as an unusual contrast in a round setting.

See all cushion cut diamond rigs here.

Platinum is a bright, white precious metal that is commonly used in wedding bands and engagement rings as an alternative to white gold. It is more durable than gold due to a higher density and chemical composition, so it is less likely to break and suffer wear and tear. It is excellent and staying bright and shiny and resists tarnishing very well.