mineral

Emerald and Diamond (Jewelry Setting)

Beryl (Be3Al2Si6O18 with Chromium/Vanadium impurities) and Carbon (C)

Hardness: 7.5-8 (Emerald), 10 (Diamond). Color: Deep green and colorless. Luster: Vitreous (glassy) to Adamantine. Crystal Structure: Hexagonal (Emerald) and Isometric (Diamond).

Hardness: 7
Color: Deep green and colorless
Luster: Vitreous (glassy) to Adamantine

Identified March 3, 2026More mineral →

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Physical properties

Hardness: 7.5-8 (Emerald), 10 (Diamond). Color: Deep green and colorless. Luster: Vitreous (glassy) to Adamantine. Crystal Structure: Hexagonal (Emerald) and Isometric (Diamond).

Formation & geological history

Emeralds typically form in hydrothermal veins or pegmatites within metamorphic rocks. Diamonds form under high pressure and temperature in the Earth's mantle and are brought up by volcanic eruptions. Geological age can range from millions to billions of years.

Uses & applications

High-end jewelry, gemstone collecting, and symbolic gifts (May birthstone for emerald, April for diamond).

Geological facts

Emeralds are often 'oil treated' to fill surface-reaching fissures and improve clarity. The rich green color is caused by trace amounts of chromium or sometimes vanadium.

Field identification & locations

Identification in the field for emeralds involves looking for the 'Jardin' (internal garden-like inclusions). In this specific ring setting, identification is best done by a jeweler using magnification and a refractometer. Common locations include Colombia, Brazil, and Zambia.

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