Coloured gemstones bring individuality, history and natural colour to engagement rings and fine jewellery. The Polished Diamonds Coloured Gemstone Guides bring together practical information for New Zealand buyers comparing sapphires, rubies, emeralds, tourmalines and other coloured stones.
Start with our guide to coloured gemstone engagement rings to compare durability, colour, treatment, setting and suitability for everyday wear. For individual stones, explore sapphire, one of the most durable coloured gemstones for rings, learn about the vivid colour and characteristics of ruby, or discover what makes emerald distinctive and why its inclusions and care requirements need special consideration. Our pink tourmaline guide explains this gemstone’s colour range, value factors and use in jewellery.
You can also learn how gemstones are formed and how trace elements create the colours seen in different gemstone species. Understanding hardness, toughness, treatments, colour, clarity and cut helps you choose a stone that suits both your design and lifestyle.
Polished Diamonds designs and makes custom jewellery in New Zealand using diamonds, sapphires, rubies, emeralds, tourmalines and other gemstones. Explore our custom jewellery design service to create a piece around a particular stone, or browse the gemstone guides below for detailed information, care advice and design inspiration.
At Polished Diamonds, we believe that your engagement ring should be as unique as your love story. Using coloured gemstones for engagement rings is the perfect way to add a personal, meaningful touch.
Pink Tourmaline is celebrated for its spectrum of pink shades, ranging from delicate pastels to intense magentas. Its striking colours make it a popular choice for various jewellery pieces, from elegant rings to exquisite necklaces.
Here at Polished Diamonds, we have a wide selection of gemstones that represent the colour ultraviolet. We encourage you to do as Pantone suggests and design a piece of jewellery using purple gemstones.
Sapphire is known as one of the hardest existing gemstones, therefore making it the most desirable gem to use for wedding and engagement rings due to its durability. Sapphires exist in a range of different colour shades.
Did you know the garnet does not just come in red? The January birthstone offers an extensive palette ranging from greens to purples, through the more common red tones including orange, pinks and red.
Have you ever thought about how gemstones are formed? I’d never really given it much thought. I just oohed and ahhed over the amazing colours and gorgeous jewellery that I’d seen in magazines, boutiques and on celebrities.
Found in just one place on earth, tanzanite is a relatively recent discovery and this blue variety of zoisite was named after Tanzania, the country where it was found, and can only be found.
The glorious green colour of the Emerald Gemstone has made the stone highly prized for many thousands of years. Believed to protect the wearer from misfortune, it has a mystical quality that soothes and promotes tranquillity.
The peridot gemstone is one of the few gemstones in only one colour, a distinctive lime green. The stone is an “Idiochromatic” gem, meaning its colour comes from the mineral’s fundamental chemical composition rather than the impurities.
Rubies have captivated hearts for centuries with their vivid red hues and rich history. Known as the “King of Gems,” rubies are the official birthstone for July, embodying passion, protection, and prosperity.
Pearls are unique as they are the only gems from living sea creatures, and unlike other gemstones, require no faceting or polishing to reveal their natural beauty. In the early 1900s, the first successful commercial culturing of round saltwater pearls began.
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