Spinel: The Understated Gemstone Fine Jewellery Needs

At first glance, the deep crimson spinel in a Victorian parure could easily be mistaken for a ruby. The mistake is centuries old: some of Europe’s most celebrated “rubies”—including the Black Prince’s Ruby in the Imperial State Crown—are, in fact, spinels. Spinel was only properly recognised as its own species in 1783, when French mineralogist Jean-Baptiste Romé de l’Isle separated it from ruby. That quiet confusion tells you a great deal about spinel’s character: it can be as regal as a ruby, yet it asks for no applause. Perhaps that is precisely why it appeals to those who prefer their jewellery with a measure of discretion.

A Gemstone of Discreet Fire

In its finest forms, spinel delivers an intensity of colour that rivals precious corundum, but with a character entirely its own. The classic red is a pure, saturated crimson, while the pink-to-magenta range has a cool, almost electric brightness. There are also breathtaking cobalt-blue spinels from Vietnam and Sri Lanka, plus the soft lavender-grey stones that look surprisingly modern in tailored mounts. Most spinels are found as natural octahedral crystals, and crucially, they are almost never heated, oiled or filled. For a buyer who values honesty in a stone, that natural clarity is a rare and persuasive quality.

For all its virtues, spinel remains a connoisseur’s choice, partly because fine material is not common. Large crystals are scarce; most finished stones are small, so a clean spinel over one carat feels genuinely special. The finest reds have long come from Burma, while Tajikistan yields vivid pink and raspberry tones. Because the gemstone is rarely enhanced, its brilliance is exactly as nature intended—a detail that quietens the heart of anyone who has sat with a loupe over an old mine ruby. It is also hard enough for daily wear, sitting at 8 on the Mohs scale, which means a ring or pendant can be worn without constant fuss.

Wearing Spinel in 18k Gold

Spinel is one of those rare stones that seems to change character according to the metal around it. Set in warm 18k yellow gold, a raspberry spinel takes on a jewel-like antique glow. A delicate pink spinel in rose gold feels softly romantic, while a cobalt-blue stone in white gold or platinum becomes cool, sleek and architectural. Because spinel’s fire is lively but not brash, it suits both a solitary centre stone and the company of small diamonds. In our workshop at Gioielleria Patricia Oro, we often place spinel in hand-finished 18k settings that allow light to reach the stone from as many directions as possible.

When buying spinel, begin with colour, because that is where its personality lives. Look for an even tone with no dead zones, and choose a hue that gives you the same pleasure in daylight as under shop lighting. Ask whether the stone has been treated, and take a quiet pleasure in the honest answer you should receive: natural. A reputable jeweller will also help you think about proportions, for a well-cut spinel should return light with a crisp, mirror-like flash. At Gioielleria Patricia Oro, we like to take our time matching each stone to its future wearer, because the right spinel is less a purchase than a recognition.