
Ametrine is a rare silicate mineral belonging to the quartz group, characterized by the coexistence of purple (amethyst) and yellow (citrine) color zones within a single crystal. This bicolored structure forms due to iron ions undergoing different oxidation states during crystal growth. Natural ametrine is commercially found only at the Anahí Mine in Bolivia, the sole known and continuously operated source of ametrine since the 17th century. Mineralogical Properties Chemical Composition and Crys
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Okan Kanpolat

Oltu Stone is a valuable mineral extracted from the Oltu district of Erzurum and also known as "Black Amber." This stone forms as lens-shaped layers within marl beds 70–80 cm thick, found in Neogene-aged sedimentary formations. These lenses, composed of marl and clay, have fractured due to tectonic movements. Oltu Stone is typically black in color but can occasionally appear in brown, gray, or greenish tones. When first extracted, the stone is soft but hardens upon exposure to air. This ease of
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Muhammed Fatih Türk

Oltu Stone is a valuable mineral extracted from the Oltu district of Erzurum and also known as "Black Amber." This stone forms within sedimentary layers, appearing as lens-shaped bodies several centimeters thick within marl beds that are 70–80 cm thick and of Neogene age. These lenses, composed of marl and clay, have fractured due to tectonic movements. Oltu Stone is typically black in color but can occasionally be found in brown, gray, and greenish tones. When extracted, the stone is soft but h
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Muhammed Fatih Türk

Jewelry is regarded in many cultures not merely as a “decorative item,” but as meaningful objects that embody identity, status, emotions, and memories. Today, the use of jewelry, particularly among women, has become both a form of personal expression and an economic and symbolic investment. Jewelry can sometimes exert diverse influences on women’s self-perception, self-confidence, social visibility, and consumption behaviors. Jewelry, Self-Perception, and Self-Confidence It has been observed tha
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Dilan Nur Kaya

Erzurum Burması, also known as the Erzurum Burma Bracelet, is a traditional bracelet handmade and unique to the province of Erzurum. Made from 22-karat gold or 925 sterling silver, this bracelet is among the distinguished examples of Turkish jewelry art due to its original design and production technique. It was officially registered as a geographical indication with a mark of origin on 25 December 2024. The registration process was carried out by the Erzurum Chamber of Commerce and Industry. St
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Elif Laçin

Obsidian is a natural rock formed by the rapid cooling of magma with high silica content, also known as volcanic glass. This rapid cooling prevents the development of a crystalline structure, resulting in obsidian's amorphous composition. Since prehistoric times, obsidian has been used in the manufacture of cutting tools and has also been favored for the production of ornaments and jewelry. Archaeological findings demonstrate that obsidian provides significant insights into ancient trade routes
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Okan Kanpolat

Amber is a natural substance formed over time as sticky resin from ancient trees hardened and fossilized. Although it resembles stone, it is of plant origin and sometimes contains fossils such as insects or leaves. What Kind of Stone Is Amber? Amber is a natural, glossy substance formed over millions of years as resin from ancient trees hardened and fossilized. Its color is typically yellow, orange, or brown. Although it appears like a stone, it is of plant origin. What Is Found Inside Amber? Re
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İbrahim Filiz

The Uluumay Ottoman Folk Costumes and Jewelry Museum is a private museum located in Bursa’s Muradiye district, inside the Şair Ahmed Pasha Madrasa, which dates back to the 15th century. It was opened to visitors on September 18, 2004. The museum’s collections were gathered over 45 years by folklorist and collector Esat Uluumay. The museum houses 18 different collections. Its core holdings consist of 70 costumes from Ottoman Anatolia and Rumelia, dating back as far as the 15th century, and 400 pi
ENHamza Ketenci
ZuZultanite is one of Türkiye’s exclusive precious gemstones, primarily mined in the Milas region of Muğla. This stone, which belongs to the diaspore mineral group, exhibits color-changing properties under different lighting conditions. Due to its unique ability to shift colors, it has gained significant attention in the international jewelry market. Physical and Chemical Properties of Zultanite Zultanite has the chemical formula Al₂O₃·H₂O and is classified as an aluminum oxide hydroxide mineral.
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Meryem Şentürk Çoban

Obsidian is a natural stone formed by the rapid cooling of lava erupted from volcanoes; it has a glassy luster and is typically black in color. It appears beautiful and is also very hard, which is why humans have used it for both tools and jewelry. How Is Obsidian Formed? When volcanoes erupt, lava is expelled. If this lava cools very rapidly, the stone known as obsidian forms. Obsidian resembles glass because it contains no crystals, giving it a smooth and shiny surface. Colors of Obsidian Obsi
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İbrahim Filiz