The Yamal land is rich in subsoil assets and has vast oil and gas reserves. Its solid minerals, ornamental and semi-precious stones are still to be studied in detail and further explored. They include extremely rare minerals which are found only in the Polar Urals and are mostly unheard of elsewhere. One of them is yenzorite — an endemic mineral, a valuable raw material for decorative products, and a unique collectible item.

Yenzorite is a volcanic rock (trachybasalt). After being formed, it was crushed and later experienced hydrothermal calcite cementation. Sometimes, there are spots and clouds with clay matter and iron hydroxides. The rock texture is speckled, porous, and breccia. Fragments of trachybasalts are black, the calcite clusters can be white, gray, or yellowish-white. Argillo-ferruginous formations are brownish-red. Due to the varying proportions of the components, yenzorite is distinguished by unique patterns and great decorative qualities. The rock is dense and amenable to polishing. It has a minor disadvantage of not being very hard. There are some voids in the rock. Yenzorite is used as an ornamental stone for making balls, decorative panels, and jewelry boxes.

As of 2020, yenzorite has been discovered only in the Yamalo-Nenets Autonomous Okrug. The word “yenzorite” comes from the name of the river Yenzor–Yakha. It was in the river’s valley that the stone was discovered by the geologist Vladimir Voronov during the geological survey of the Shchuchinskaya area in 1973–1975. He also came up with the name of the mineral and refused to call it “voronite”.

Nowadays, the inventory of ornamental, colored stones includes over 30 stones that are successfully used in stone carving and crafts. The most popular ornamental and decorative stones of the Polar Urals include greenstone, jadeite, rodingite, jasper, agate, gondite, chrome-diopside, bronzitite, actinolithite, yenzorite, blue marl, eclogite, basalt tuffs, marble, felsite, tulite, and others. Many of them are extremely rare and have great decorative properties, including gondite, yenzorite, eclogite, and agate. The stones are of interest to stone cutters from other regions and countries.