![](https://thenational-the-national-prod.cdn.arcpublishing.com/resizer/v2/I63CXS43DIVO754XXW6AFO6FOA.jpg?smart=true&auth=a75df8f535329d8b46e8a916de5f0e86dcf13f82941a01338671ed7761a7c899&width=400&height=225)
The Mountain Star Ruby collection collectively weighs in at 342 carats. Courtesy Guernsey’s
![](https://thenational-the-national-prod.cdn.arcpublishing.com/resizer/v2/SQVBRYRBBEVPMH6GPRV4U2WL5E.jpg?smart=true&auth=1e33f95553e9396b2e5215ac31ed9fadffaf0420a8b05b7d3116d6123c9c6be8&width=400&height=225)
At a whopping 887 carats, La Gloria is one of the largest rough emeralds in the world, overtaking the 857-carat Gachalá displayed in the Smithsonian Institution in Washington.
![](https://thenational-the-national-prod.cdn.arcpublishing.com/resizer/v2/TPVNGB7KDS77M7YX5JD2WB3RDE.jpg?smart=true&auth=a03b1a5960c2cf160c6b42147ad9cee4727546f33ba5ba6bf44e47e2b35dd42c&width=400&height=225)
Part-owner by Gemfields, the Montepuez Ruby Mine in Mozambique is one of the most significant ruby deposits to have been discovered in recent times. Courtesy Gemfields
![](https://thenational-the-national-prod.cdn.arcpublishing.com/resizer/v2/ZWNU56M4QMYZAAGO65WONWMEIY.jpg?smart=true&auth=b7c83dffc3c60a05bd2f1ad89b4a1b4e4472d66e133460b3548d1b29efe10ca4&width=400&height=225)
A peacock pear from the Robert Wan group. Courtesy Robert Wan
![](https://thenational-the-national-prod.cdn.arcpublishing.com/resizer/v2/QK5GNEIYOKBXEVK27MHU4STLU4.jpg?smart=true&auth=08822b954753c9dd7be6744411502f03e6bd6c466ef033728a3fd140f66f7385&width=400&height=225)
The Pink Star, the 59.60-carat, oval, mixed-cut pink diamond, is the largest internally flawless fancy vivid pink diamond that the Gemological Institute of America has ever graded. Courtesy Sotheby’s
![](https://thenational-the-national-prod.cdn.arcpublishing.com/resizer/v2/CTM3K2W7HTKM456BQGRMVWQYZI.jpg?smart=true&auth=0f32fb499540b7332e6f973616350ff0bd9e9a2d0f241e407f65a5a44f6a026c&width=400&height=225)
The Stotesbury Emerald weighs about 34.40 carats and has been in the possession of some of history’s most avid jewellery collectors. Courtesy Sotheby’s
![](https://thenational-the-national-prod.cdn.arcpublishing.com/resizer/v2/I63CXS43DIVO754XXW6AFO6FOA.jpg?smart=true&auth=a75df8f535329d8b46e8a916de5f0e86dcf13f82941a01338671ed7761a7c899&width=400&height=225)
The Mountain Star Ruby collection collectively weighs in at 342 carats. Courtesy Guernsey’s
![](https://thenational-the-national-prod.cdn.arcpublishing.com/resizer/v2/SQVBRYRBBEVPMH6GPRV4U2WL5E.jpg?smart=true&auth=1e33f95553e9396b2e5215ac31ed9fadffaf0420a8b05b7d3116d6123c9c6be8&width=400&height=225)
At a whopping 887 carats, La Gloria is one of the largest rough emeralds in the world, overtaking the 857-carat Gachalá displayed in the Smithsonian Institution in Washington.
![](https://thenational-the-national-prod.cdn.arcpublishing.com/resizer/v2/TPVNGB7KDS77M7YX5JD2WB3RDE.jpg?smart=true&auth=a03b1a5960c2cf160c6b42147ad9cee4727546f33ba5ba6bf44e47e2b35dd42c&width=400&height=225)
Part-owner by Gemfields, the Montepuez Ruby Mine in Mozambique is one of the most significant ruby deposits to have been discovered in recent times. Courtesy Gemfields
![](https://thenational-the-national-prod.cdn.arcpublishing.com/resizer/v2/ZWNU56M4QMYZAAGO65WONWMEIY.jpg?smart=true&auth=b7c83dffc3c60a05bd2f1ad89b4a1b4e4472d66e133460b3548d1b29efe10ca4&width=400&height=225)
A peacock pear from the Robert Wan group. Courtesy Robert Wan
![](https://thenational-the-national-prod.cdn.arcpublishing.com/resizer/v2/QK5GNEIYOKBXEVK27MHU4STLU4.jpg?smart=true&auth=08822b954753c9dd7be6744411502f03e6bd6c466ef033728a3fd140f66f7385&width=400&height=225)
The Pink Star, the 59.60-carat, oval, mixed-cut pink diamond, is the largest internally flawless fancy vivid pink diamond that the Gemological Institute of America has ever graded. Courtesy Sotheby’s
![](https://thenational-the-national-prod.cdn.arcpublishing.com/resizer/v2/CTM3K2W7HTKM456BQGRMVWQYZI.jpg?smart=true&auth=0f32fb499540b7332e6f973616350ff0bd9e9a2d0f241e407f65a5a44f6a026c&width=400&height=225)
The Stotesbury Emerald weighs about 34.40 carats and has been in the possession of some of history’s most avid jewellery collectors. Courtesy Sotheby’s
![](https://thenational-the-national-prod.cdn.arcpublishing.com/resizer/v2/I63CXS43DIVO754XXW6AFO6FOA.jpg?smart=true&auth=a75df8f535329d8b46e8a916de5f0e86dcf13f82941a01338671ed7761a7c899&width=400&height=225)
The Mountain Star Ruby collection collectively weighs in at 342 carats. Courtesy Guernsey’s