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Our ready to ship styles are signature designs that embody the essence of Cushla Whiting, and feature only the best, one-of-a-kind gemstones from our collection.
Our bespoke service allows you to customise one of our signature designs by selecting your own diamonds and coloured gemstones from our rare and multi-faceted collection.
Immortalise your story by commissioning a piece of Cushla Whiting’s distinctive style. Our one-of-a-kind stones are ready for your ideas.
All of our ceremonial bands are custom fit to perfectly match any engagement ring.
Contemporary yet understated, for those seeking a ceremonial band with a timeless edge.
Discover a piece that empowers you to express yourself in your own authentic way.
Be bold and make a statement
with one of our sleek eternity bands.
We love to work with our clients to create a custom ceremonial wedding band that perfectly reflects their identity and individual style.
What do a former architect, a former lawyer and a gemologist have in common?
Diamonds in their DNA.
Our gift vouchers are a beautiful gesture to all jewellery lovers and those approaching a milestone worth celebrating.
Interested in learning more about diamonds, gemstones and the industry in general? Discover articles relating to these topics and more.
Our bespoke and custom jewellery design service pairs your creative vision with our expertise to create a custom engagement ring, ceremonial band or piece of fine jewellery.
We go beyond the GIA's 4 Cs, to select the worlds most beautiful diamonds, the smart way. Learn more about how we buy our diamonds here so you can buy with confidence.
Learn more about our collection of beautiful coloured gemstones including, sapphire, spinel, emerald and ruby, the criteria used to assess quality and how this effects value.
We go to extra lengths to ensure that our diamonds and gemstones are ethically sourced, and that our jewellery is responsibly and sustainably made. Find out more about our sourcing and manufacturing processes here.
Be guided on your journey by one of our expert design and gemstone consultants. Select your favourite design, handpick your gemstone from our rare and multi-faceted collection and learn about our difference when it comes to the diamond 4 C's and coloured gemstone sourcing.
No matter where you are in the world, we’ll work together to create a unique and beautiful design that captures you perfectly—be it a custom engagement ring, wedding band or a piece of fine jewellery.
To preserve the beauty of your precious piece of jewellery, you are advised to treat them with great care and handle them with delicacy.
HAMISH WHITING GIA Gemologist and HRD Antwerp Diamond Grader
All of our coloured gemstones are responsibly sourced by our GIA Gemologist, Hamish Whiting, from small-scale, independent artisanal mines in both developed countries such as Australia and Montana (USA), and developing countries such as Sri Lanka, Nigeria, and Madagascar.
We limit our supply chain as much as possible by buying either directly from the miners, the gemstone cutters, or local trusted brokers who work directly with the miners. Hamish has formed strong relationships with our trusted suppliers in each mining area to ensure that the mining operations follow ethical practices.
Sapphire is a precious gemstone, a variety of the mineral corundum, consisting of aluminium oxide with trace amounts of elements such as iron, titanium, chromium, vanadium, or magnesium. It is typically blue, but natural "fancy" sapphires also occur in yellow, purple, orange, and green colours; "parti sapphires" show two or more colours. Red corundum stones also occur, but are called rubies not sapphires
Nigerian sapphires come in a range of beautiful hues including, teal, green, parti blue/green, and royal blue. Known for their naturally rich colour saturation and excellent clarity, the vast majority of our Nigerian sapphires are also unheated. This means that they have not been subjected to any form of heat treatment to enhance their colour or clarity (a common practice in sapphires from other locations).
We have an incredible collection of hand-selected unheated Nigerian sapphires in our collection. One of our favourite gemstones, Nigerian sapphires offer one of the most beautiful sources of sapphires as well as very reasonably priced compared to more established sapphire regions.
Sri Lanka, formerly Ceylon, remains one of the single most important sources for sapphires in the world. We collect fine quality Sri Lankan sapphires in many colours including light blue, royal blue, cornflower blue, pink, peach, violet and yellow.
Sri Lanka is famed for its "Royal Blue" and "Cornflower Blue" sapphires, which are very sought after.
Royal Blue sapphires are vivid blue-violet with a deep tone, creating a beautiful deep blue. Cornflower Blue sapphires have a pastel to medium color tone, and a pure blue hue similar to the colour of a cornflower.
Montana is the only state in the USA that produces a significant quantity of gem quality sapphires, earning it the nickname “the Treasure State”. Montana sapphires are primarily known for their attractive oceanic teal blues and a very wide range of unheated pastel colours.
Because of the material’s typically pale colour saturation it is often heated to create a deeper, more vivid body colour and also to improve clarity/transparency.
Australia is another source of beautiful and unique sapphires. Historically overlooked by the world market because of the large amount of commercial quality dark blue/black Australian sapphires that entered the market in the 1980s.
Australian sapphires can actually be found in a wide range of hues including deep blues, medium toned greenish blues, pure greens, yellows, and the rare and always unique “parti”. Today, fine quality Australian sapphires are renowned worldwide. Hues that are rare on the world market but comparatively common in Australian material (such as pure greens and partis) now sell for a premium.
Madagascan sapphires come in an incredibly wide range of hues including rich cornflower blues, teals, greens, yellows, purples, vivid pinks and pastel peaches - and even pure red rubies.
Madagascan rough crystals can regularly reach sizes in excess of 10 carats and are known for their excellent quality and high clarity.
When assessing the quality/value of the sapphire the same philosophy of the 4 C’s is applied: colour, clarity, cut, carat. However there are also other factors which can influence the value of a sapphire including treatments, origin, and the global supply and demand for certain colours.
Whilst colour and clarity will to a large extent determine the value of a sapphire, there is no official grading system for sapphires like there is for diamonds. Gem certificates for coloured stones normally only state the following - carat weight, shape, transparency, hue, dimensions, whether it’s natural or synthetic, and whether it has any detectable treatments.
Colour generally has the greatest influence on the value of a sapphire. The three components to consider in regards to colour are: hue; saturation; and tone. The hue is the basic impression of the colour (i.e green or blue), the saturation is how vivid or intense the hue is, and the tone is the relative lightness or darkness of the hue. The combination of these three components determine the value of the stone with respect to colour.
There is no recognised clarity grading system for sapphires. Unlike with diamonds, you should expect to see inclusions clearly with a loupe. Sapphires are therefore not scrutinised as harshly as diamonds under magnification and are more commonly judged for clarity with the naked eye.
Traditional heat treatment or enhancement of sapphires is very common practice within the gem industry, and the majority of sapphires on the market (estimated to be around 97%) have been subjected to some form of heat treatment. Heating a stone is performed after the gem is mined in order to enhance a sapphire's colour, dissolve ‘silk’ rutile needles, remove colour zoning and make the stone visibly clearer.
The results of traditional heat treatment are permanent, and heating is considered to be a natural treatment if no extra chemicals or additives are used. It is simply a continuation of the heating that occurs when a gemstone is formed in the earth. To differentiate between a heated and unheated sapphire can be extremely difficult, even under a microscope. Unheated sapphires are much more rare than heated sapphires and can affect the value either slightly or significantly, depending on the colour and global demand for that colour.
Unnatural treatments that use chemicals to enhance the colour or clarity of a sapphire should be disclosed by sellers of sapphires as they can make the sapphire appear a lot more valuable than it really is. We avoid any sapphires that have unnatural treatment methods such as fracture filling and Beryllium diffusion.
Fine quality Colombian emeralds are one of the most highly sought after gemstones in the world. Our Gemologist Hamish Whiting, spent years living in Colombia pursuing his passion for emeralds, while establishing trusted local contacts. All Cushla Whiting emeralds are ethically sourced directly from Colombia. We are lucky enough to have a small collection of emeralds from the Muzo emerald mine.
Muzo is the oldest and most revered emerald mine in the world, prized for its high quality emeralds of ideal colour. Muzo emeralds are the standard by which all other emeralds are measured. Furthermore, they are completely mine to market, with the rough being extracted and then cut and polished at the Muzo headquarters. Each Muzo emerald is individually numbered and can be traced back to the ‘rough’ it originated from. Muzo is recognised as an industry leader in its commitment to social, ethical and environmental responsibility.
Due to the naturally more fragile nature of emeralds, the vast majority have received some treatment to enhance their appearance and durability. With most emeralds coming from Colombia or Zambia you need to be extremely careful to ensure that you know what treatment the emerald has received as there are many treatments used in these countries that are unstable and can dramatically increase the apparent value of a stone.
Our Gemologist only buys emeralds that have only had minor cedar wood oil treatment. This is a stable treatment and means that the emerald only requires a minor amount of oil, so are naturally already more durable than those which have required more significant amounts of oiling or other treatments such as fracture filling.
The quality of emeralds can range enormously. Quality, not size, is the major factor in the value of an emerald, the quality being a combination of the intensity of color and the transparency of the crystal.
Origin can also affect value as this largely determines the colour quality, for example, Colombian emeralds are more valuable than African emeralds due to their superior pure green hue. Even the different mines within Colombia produce different quality emeralds which has an effect on price.
Spinels are a lustrous and durable gemstone that come in a range of hues such as deep teals, dark blues, vivid reds, pinks, metallic greys. Cushla Whiting spinels originate from both Sri Lanka and Vietnam.
Spinels are a common favourite of gemologists due to their durability, clarity, lustre, and rarity at reasonable price points.
Our sizing is based on the inner diameter of our ring in millimetres. Refer to the measuring chart in our guide.