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Gemstones - African Jade
African jade is a trade name for green grossular garnet. The material has also been known as Transvaal jade. Despite its name, it is not true jade. The designation arose because of its green color and somewhat similar appearance. Such trade names were common in earlier gemstone marketing.
Grossular belongs to the garnet group of minerals. It occurs in a wide range of colors, including green, yellow, orange, and colorless varieties. The green form may resemble jade when polished. This similarity contributed to the adoption of the name African jade. However, the two materials are mineralogically distinct.
True jade consists of either jadeite or nephrite. Grossular garnet differs in both composition and crystal structure. Gemologists use various tests to distinguish between these materials. Refractive index, specific gravity, and microscopic examination provide useful information. Accurate identification is important for proper valuation.
African jade has been used in carvings, beads, and ornamental objects. Its attractive green color and durability make it suitable for decorative purposes. Some specimens possess a rich and pleasing appearance. Collectors may appreciate unusual examples with exceptional color. The material has maintained modest popularity.
Today, the term African jade survives mainly as a historical trade designation. Modern gemologists generally prefer the more accurate term green grossular garnet. Understanding older names helps interpret historical references and commercial literature. It also promotes clearer communication. Consequently, African jade remains a noteworthy trade term.
African jade is a trade name for green grossular garnet. The material has also been known as Transvaal jade. Despite its name, it is not true jade. The designation arose because of its green color and somewhat similar appearance. Such trade names were common in earlier gemstone marketing.
Grossular belongs to the garnet group of minerals. It occurs in a wide range of colors, including green, yellow, orange, and colorless varieties. The green form may resemble jade when polished. This similarity contributed to the adoption of the name African jade. However, the two materials are mineralogically distinct.
True jade consists of either jadeite or nephrite. Grossular garnet differs in both composition and crystal structure. Gemologists use various tests to distinguish between these materials. Refractive index, specific gravity, and microscopic examination provide useful information. Accurate identification is important for proper valuation.
African jade has been used in carvings, beads, and ornamental objects. Its attractive green color and durability make it suitable for decorative purposes. Some specimens possess a rich and pleasing appearance. Collectors may appreciate unusual examples with exceptional color. The material has maintained modest popularity.
Today, the term African jade survives mainly as a historical trade designation. Modern gemologists generally prefer the more accurate term green grossular garnet. Understanding older names helps interpret historical references and commercial literature. It also promotes clearer communication. Consequently, African jade remains a noteworthy trade term.
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