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New large stones found at Yubileynaya pipe

In January 2018, ALROSA recovered two gem-quality stones weighing 97.92 carats and 85.62 carats, from Yubileynaya pipe at Aikhal Mining and Processing Division.

A 97.92 carat rough diamond is a transparent octahedron yellow-hue crystal with small sulfide and olivine inclusions near the surface. The measures are 26 х 17 х 21 mm.

Diamond 97

The second rough diamond, a 85.62-carat stone, is also a transparent yellow-hue crystal. It is an isometric octahedron crystal with small disseminated inclusions. The measures are 27.89 х 27.20 х 27.14 mm.

Diamond 85

Evgeny Agureev, Director of the USO ALROSA, Member of the Executive Committee:

“We are happy to announce new findings. It is true that large stones over 50 carats are very rare. Such diamonds are traditionally sold at auctions where they are in good demand. ALROSA manufactures the rarest and clearest diamonds at its cutting division DIAMONDS ALROSA and sells them on its own.”

Yubileynaya pipe was discovered in 1975 and ranks among the largest primary diamond deposits both in Yakutia and abroad. The deposit is traditionally ALROSA’s leader in the recovery of large diamonds.

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