Largest cut neptunite

According to Official Guinness Records,

The largest cut neptunite weighs 15.43 carats (3.09 g, 0.11 oz) and is owned by Ophir Collection, LLC (USA) on 25 January 2014.
The neptunite is a mineral containing potassium, iron, sodium, lithium, manganese, silicon, oxygen, and titanium.

For a complete list of 2014 records, please visit 2014 Guinness Records in United States.

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