Sapphire — The Complete Guide

Sapphire is one of the most beloved gemstones in fine jewellery — celebrated for its vivid colour, exceptional durability, and centuries of royal and romantic association. From the iconic blue of Princess Diana's (and now Catherine, Princess of Wales') engagement ring to vibrant pink, padparadscha, yellow, and Australia's distinctive parti sapphires, this single gemstone offers an extraordinary range of colours and expressions.

At Diamond Imports, Daniel personally sources sapphires of exceptional quality from Sri Lanka, Madagascar, Australia, and beyond — for engagement rings, dress rings, earrings, and bespoke commissions across Sydney and Australia-wide.

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What Is a Sapphire?

Sapphire is the gem-quality variety of the mineral corundum — the same mineral that produces ruby. The distinction is simple: red corundum is called ruby; corundum of any other colour is called sapphire. This means sapphires come in nearly every colour of the rainbow, with blue being the most famous and historically significant.

Sapphire ranks 9 on the Mohs hardness scale, making it the second-hardest natural gemstone after diamond. This exceptional durability is one of the reasons sapphire has been the gemstone of choice for engagement rings, signet rings, and heirloom pieces for centuries — it stands up to daily wear better than almost any other coloured stone.

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Blue Sapphire — The Classic

When most people picture a sapphire, they picture a deep, velvety blue stone. Blue sapphire is the most famous variety and the one with the longest history in royal and ceremonial jewellery.

What Makes a Top Blue Sapphire?

The most prized blue sapphires display a vivid, pure blue with a slight violet undertone — described in the trade as "cornflower blue" or "royal blue." The colour should be neither too dark (which makes the stone appear black in low light) nor too light (which reduces its visual impact). The most desirable tone is medium to medium-dark with high saturation.

Famous Origins of Blue Sapphire

• Kashmir — historically the most prized origin, producing legendary "velvety" cornflower-blue sapphires. The original Kashmir mines have been largely exhausted since the early 20th century, making genuine Kashmir sapphires extraordinarily rare and valuable.
• Burma (Myanmar) — known for rich, slightly violet "royal blue" sapphires. Top Burmese sapphires rival Kashmir stones.
• Sri Lanka (Ceylon) — the most consistent source of fine blue sapphires today. Ceylon sapphires are typically lighter and brighter than Burmese stones, with excellent transparency and brilliance.
• Madagascar — a major modern source producing sapphires across a wide quality range, including stones that rival Ceylon material.
• Australia — Queensland and New South Wales produce sapphires that tend to be darker and more inky in tone, though fine bright-blue Australian stones do exist.

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Fancy Sapphires — Every Colour Except Red

Sapphire's colour range is its greatest secret. Beyond blue, sapphires occur in pink, padparadscha, yellow, green, purple, violet, and even colourless (white) varieties — as well as the distinctive Australian "parti" sapphires that display multiple colours in a single stone. These fancy sapphires have become some of the most sought-after gemstones in modern engagement rings.

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How Sapphires Are Graded

Sapphires are graded on the same principles as all coloured gemstones — colour, clarity, cut, and carat — with origin and treatment as additional value factors.

Colour

The single most important factor. A sapphire's value is driven primarily by the purity, intensity, and tone of its colour. For blue sapphires, "royal blue" and "cornflower blue" are the most desirable descriptors. For pink, vivid hot pink commands the highest premiums. For padparadscha, the prized colour is a delicate even blend of pink and orange.

Clarity

Fine sapphires can be eye-clean (no inclusions visible to the naked eye) but most natural sapphires contain some inclusions. The key questions are: do the inclusions affect the stone's transparency and brilliance, and are they positioned where they affect the face-up appearance? Small inclusions invisible to the naked eye are perfectly acceptable in fine sapphires.

Cut

A well-cut sapphire maximises its colour and brilliance. The most common cuts are oval, cushion, round, emerald cut, and pear. Quality cutting also evens out colour distribution — particularly important in stones with colour zoning.

Carat

Fine-quality sapphires above 3 carats become significantly rarer and command per-carat premiums. Top-quality Kashmir, Burmese, or Ceylon stones above 5 carats are genuinely rare and valued accordingly.

Origin

For significant sapphires, geographic origin matters. Kashmir, Burmese, and Ceylon (Sri Lankan) origins command premiums — and certified origin (from labs like SSEF, Gübelin, or GRS) is documentation worth having for any high-value stone.

Treatment

Most sapphires on the market have been heat-treated to improve colour and clarity. Heat treatment is stable, widely accepted in the trade, and disclosed routinely. Unheated sapphires of fine colour — particularly from prestigious origins — command significant premiums and are typically sold with laboratory certification confirming no thermal enhancement. Diamond Imports discloses every treatment in full.

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Sapphire Engagement Rings

Sapphire is the second most popular engagement ring stone in the world after diamond — and its popularity continues to grow. There are excellent reasons for this:

• Exceptional durability — at 9 on the Mohs scale, sapphire holds up to a lifetime of daily wear better than almost any other coloured stone.
• Distinctive colour — a sapphire engagement ring stands out from the sea of diamond rings while still offering classic, timeless beauty.
• Royal heritage — from Princess Diana's ring (now worn by Catherine, Princess of Wales) to Queen Victoria's wedding jewellery, sapphire has centuries of romantic association.
• Value — fine sapphires offer outstanding visual impact per dollar compared to equivalent diamonds.
• Endless choice — from classic cornflower blue to vivid pink, peach padparadscha, or distinctive Australian parti, sapphire offers a colour for every personality.

At Diamond Imports, we craft sapphire engagement rings in every classic style — solitaires, halo settings (the famous Diana / Catherine style), three-stone designs, vintage and Art Deco inspired pieces, and entirely bespoke commissions. Daniel will help you select the right sapphire for your design, budget, and intended setting.

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Caring for Your Sapphire

Sapphire is one of the most low-maintenance gemstones you can own. Its hardness and chemical stability mean it can be cleaned safely in almost any way:

• Warm soapy water with a soft brush is perfect for routine cleaning at home.
• Ultrasonic and steam cleaning are generally safe for untreated and heat-treated sapphires, but should be avoided for fracture-filled or heavily included stones.
• Avoid sharp impacts — sapphire is hard but not unbreakable. A direct blow on a hard surface can chip the stone.
• Store separately from softer gemstones to prevent scratching them. Sapphire will easily scratch emerald, opal, and pearl.
• Annual professional check — have the setting inspected once a year to ensure prongs and claws remain secure.

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The Sapphire Symbolism

Sapphire has been associated with wisdom, royalty, divine favour, and fidelity for thousands of years. In medieval Europe, sapphire was believed to symbolise heaven and was worn by clergy. It is the traditional gift for the 5th and 45th wedding anniversaries and is the September birthstone. Few gemstones carry such deep cultural and symbolic weight.

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