The UC Blog

The Bow Tie Effect in Diamonds: Understanding This Optical Phenomenon When it comes to diamonds, we often focus on the traditional "Four Cs" - cut, colour, clarity, and carat weight. However, there's another fascinating characteristic that deserves attention, particularly in...
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In the complex world of coloured gemstones, it's crucial to approach new terms and marketing claims with a healthy dose of scepticism. Today, we're taking a closer look at "recrystallised sapphires" - a term that has been causing some confusion...
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Parti sapphires, prized for their unique multi-colour appearance, have traditionally been exclusively natural gemstones. However, recent technological advancements have led to the creation of synthetic parti sapphires in laboratories. While these lab-created gems try to mimic the appearance of natural...
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Birthstones have long held a special place in human culture, each month associated with a unique gem that carries its own significance and beauty. For those born in October, the birthstone is the enchanting opal—a gem that seems to capture...
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In recent years, the jewellery industry has witnessed a significant shift in the value and popularity of various precious stones, particularly when it comes to engagement rings and heirloom pieces. While diamonds have long been the traditional choice for these...
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