• Ancient Jewellery Made with Nanotechnology

    Scientists have found that people made jewellery with nanotechnology more than 2000 years ago. Goldsmiths and silversmiths from the Dark Ages and other periods used mercury as glue to apply coatings of thin metal films onto objects such as jewels, statues and amulets.

    The use of thin-film coating technology not only helped to save on expensive metals, but also to improve wear resistance from continuous use. Scientists believe that these metal-plating techniques, which are unrivalled by the modern process for producing DVDs and electronic items, could also help to preserve artistic objects from the past.

    Continue reading

  • Women Prefer Coloured Gemstones Over Diamonds

    Coloured gemstones such as sapphires, rubies and emeralds are taking over diamonds as more women prefer colour in their jewellery.

    In the last eight years, the price of coloured gemstones has increased at a faster rate than diamonds, but they are still cheaper to buy. Many women, particularly from Asia, want to buy coloured stones, with demand having increased three times since 2010. Vashi Dominguez, founder of Diamond Manufacturers, believes this is what is driving up prices.

    Continue reading

  • Birthstones for August - Peridot and Sardonyx

    There are two birthstones for the month of August: peridot and sardonyx.

    The colour of peridot can vary from yellowish green to brown, but most people prefer the bright lime greens and olive greens. Small sizes of peridot tend to be used for beaded necklaces and bracelets. It is claimed that peridot has magical powers and healing properties that can help protect people against nightmares and bring them power, influence, and a good year ahead. Peridot is formed beneath the earth’s surface and brought up by volcanic lava. In Hawaii, peridot represents Pele’s tears, who is the goddess of fire and volcanoes. Peridot can also be found in Arizona, China, Myanmar and Pakistan.

    Continue reading

  • Lightning Ridge Opal Festival 2013

    The 2013 Opal Festival in Lightning Ridge celebrated 20 years since opal became Australia’s national gemstone and 50 years since the Ridge received its name. The festival also celebrated 110 years since the first black opals were mined at Lightning Ridge and were sold by Charlie Nettleton in White Cliffs.

    The International Opal Jewellery Design Awards kick-started the festival, with opal jewellery from around the world entered into the competition and showcasing the current trends. The IOJDAA hosted the Gala Awards Dinner and showcased the opal jewellery entries at the Lightning Ridge and District Bowling Club on Friday, July 26. The entries were also displayed at the Opal Trade Show in the Legends Room from Thursday, July 25 to Sunday, July 28.

    Continue reading

  • Jewellery Industry Anticipates Bright Future for Tanzanite

    The African jewel tanzanite, which can only be found at Mount Kilimanjaro in Tanzania, is gaining momentum as one of the best-selling gemstones in the world.

    Originally called blue zoisite, tanzanite received its name from Tiffany & Co. to make it more appealing to consumers, and as a reference to its country of origin. It has a sapphire blue colour with violet overtones, which appear after receiving heat treatment. Although tanzanite may be rare, since its discovery in 1967 there have been more than 2 million carats’ worth of the gem released to the jewellery industry.

    Continue reading

  • Digging for Diamonds in Ghana’s Birim River

    The banks of Ghana’s Birim River are filled with diamonds, with many artisanal miners digging up this precious gemstone since 1920. The mansions in Akwatia, a town near the river, are owned by diggers who found large diamonds or by concession holders who take cuts from the finds of miners.

    By 1935, the production of diamonds doubled – with a million carats being produced per year through small-scale mining – making the Birim River an important source of diamonds. However, in the 1970s, diamond-rich areas declined and old mining equipment couldn’t process smaller stones of lower quality. It is these stones that most artisanal miners dig up today, with the majority of the 301,000 carats mined each year being darker stones tinier than 0.10 ct.

    Continue reading

  • Enhancing Brightness and Colour in Faceted Gemstones

    There are rules that govern the way people perceive and process visual cues, which affect how bright or attractive a gemstone’s appearance is, according to GIA’s project manager of cut research Al Gilbertson.

    Everyone perceives brightness differently and preferences regarding appearance vary, so understanding what patterns or angle combinations enhance the visual contrast, colour, spread, brightness and scintillation of gemstones is crucial when formulating design strategies and modifying the design of facets. The most appealing and effective design is one that balances brightness, contrast and colour, increases a gemstone’s fire, and has coherent pattern elements even when the gemstone is tilted.

    Continue reading

11-17 of 17 total

  1. 1
  2. 2