DiamondBuzz
Sri Lanka Unveils World’s Largest Documented Purple Star Sapphire
3,563-carat ‘Star of Pure Land’ features rare six-ray asterism; valuations reportedly reach up to $400 million.
Sri Lanka has officially unveiled what is believed to be the largest documented natural purple star sapphire ever discovered. Weighing an extraordinary 3,563 carats, the gemstone—named “The Star of Pure Land”—was formally presented at a ceremony in Colombo by its anonymous owners, who confirmed that the stone is available for sale.
The sapphire is distinguished by its exceptionally sharp six-ray asterism, a rare optical phenomenon created by light interacting with microscopic inclusions within the gem. Displayed in a cabochon cut, the star effect appears vividly defined, placing the stone in an exceptional category among star sapphires.
Gemological experts note that while Sri Lanka is globally renowned for producing some of the world’s finest sapphires, this specimen stands apart in both scale and quality. Preliminary international valuations reportedly range between $300 million and $400 million, potentially making it one of the most valuable sapphires ever recorded.
Beyond its extraordinary market value, the discovery reinforces Sri Lanka’s historic significance in the global gemstone trade and highlights the enduring rarity of exceptional natural gemstones in an era increasingly shaped by laboratory-grown alternatives.
DiamondBuzz
Pandora Adds Carbon Footprint Labelling For LGDs
New Level Of Transparency Empowers Consumers To Compare Climate Impact Of Their Diamond Jewellery
For decades, diamonds have been graded by the traditional 4Cs: Cut, Colour, Clarity and Carat. Now Pandora is adding the 5th C, declaring the carbon footprint of every Pandora Lab-Grown Diamond as part of the product information on pandora.net alongside the traditional four grading criteria.
The carbon footprint covers all emissions from the diamond crafting process: from producing the raw materials used to grow the diamond all the way until it is cut and polished, ready to leave the diamond facility.
As an example, a one carat Pandora Lab-Grown Diamond has 12.58 kg of CO2e emissions. This is around 90% lower than a mined diamond of the same size.
By adding carbon footprint to the diamond conversation, Pandora gives customers an extra point of comparison and essential insight into the climate impact of their desired diamond jewellery.
CARBON FOOTPRINT COMPARABLE TO A PAIR OF JEANS
Lab-grown diamonds are chemically, optically, thermally and physically identical to mined diamonds.
Pandora stopped using mined diamonds in 2021 and is now only using lab-grown diamonds made with 100% renewable electricity and set in jewellery crafted from 100% recycled silver and gold.This significantly reduces the carbon footprint of the Pandora Lab-Grown Diamonds collection. For example, a 14k gold Pandora Infinite ring with a 1 carat lab-grown diamond has a comparable carbon footprint to a pair of jeans.
PANDORA TO SHARE FINDINGS
The carbon footprints of Pandora’s lab-grown diamonds have been calculated by external life-cycle assessment experts and published in a study verified by auditing firm EY. The study uses best practice methodology and is available on pandoragroup.com.
Adding a 5th C is a response to increasing consumer expectations to sustainability, and Pandora will share its methodology and findings with other jewellery makers to inspire greater transparency across the sector.
Pandora Lab-Grown Diamonds are currently available in the US, UK, Canada, Australia, New Zealand and Denmark with more countries to be added soon.
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