What is Oltu Stone?
Oltu Stone is a special sedimentary rock extracted from the Oltu district of Erzurum and also known as “Black Amber.” It occurs in lens-shaped layers within Neogene-aged rock strata, appearing in thin beds and sometimes containing plant fossils.
How Is It Extracted and Processed?
When extracted from the soil, it is soft; however, it hardens rapidly upon exposure to air. Therefore, it is preserved in a moist environment until it is ready for carving. It is traditionally extracted from galleries and carefully worked and polished by skilled artisans.
(Generated by Artificial Intelligence.)
Physical and Tactile Properties
When touched, it gives a velvety sensation and leaves brown powder when rubbed on sandpaper. While soft when not exposed to air, it hardens over time and becomes durable. It is typically black in color but occasionally exhibits dark brown or greenish tones.
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Applications and Value
Oltu Stone is most commonly used in rosaries, jewelry, and decorative objects. Its luster increases with polishing, and it attracts interest in both local and international art circles. Its registered geographical indication further enhances its cultural and economic value.
