MARKET INTELLIGENCE 市场情报 84 | JNA September/October 2024 Teal sapphire’s captivating hue and innate attributes that make it ideal for jewellery are fuelling demand for this coloured gemstone, which is increasingly making its way into jewellery collections. A member of the corundum family, which includes blue sapphire and ruby, teal sapphire exhibits a mix of blue and green colours, often in varying intensities. This colour combination results from the presence of trace elements, primarily iron and titanium, within the crystal structure. The ratio and concentration of these elements determine the exact shade of teal, which can range from a more bluedominant tone to one with a stronger green presence. The term "teal" refers to a specific shade that sits between blue and green on the colour spectrum, resembling the colour of teal ducks that are known for the rich and distinctive colours of their feathers. Many teal sapphires are prized for their natural, untreated beauty. Colour standards Attesting to the coloured gemstone’s growing popularity is the increase in submissions of teal sapphires for classification by The Gem and Jewelry Institute of Thailand (Public Organization) or GIT. To make certain these greenish-blue stones are not mistaken for blue sapphires, GIT formulated colour standards for the trade term “teal sapphire” earlier this year. “The surge in consumer interest in teal sapphires over the last few years prompted us to establish clearer guidelines and communicate them more prominently to minimise confusion and ensure consistent classification practices,” said GIT Director Sumed Prasongpongchai. For GIT to classify a stone as a teal sapphire, its colour must fall within the designated boundary of the master stones under standard lighting conditions. It should not display any alterations in colour when exposed to different 蓝绿色蓝宝石之正名 Spurred by growing market demand for teal sapphires, the Gem and Jewelry Institute of Thailand is providing clear colour standards for the trade term to prevent their misclassification as blue sapphires. 蓝绿色蓝宝石(teal sapphires)的需求大增 ， 驱使GIT泰国珠宝学院为该贸易术语确立清晰的颜色标准，避免将其错误归类为蓝色蓝宝石。 TEAL SAPPHIRES Defining
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