Russia's first natural blue diamond was mined in Kyotia.
A stone-quality blue diamond weighing 2.74 carats was discovered in the Naqin kimberlite field. This is the first documented case of mining such a crystal in Russia. Its blue color is due to the presence of boron.
Alrosa completes the stone cutting with 11 specialists. The finished diamond is scheduled to be unveiled at the end of November 2026.