Emerald A Grade Tumblestone Natural Green Beryl Crystal Polished Emerald
£ 8.10
EMERALD A GRADE TUMBLESTONE – NATURAL GREEN BERYL MINERALThis Emerald A Grade tumblestone is a genuine polished mineral specimen composed
of natural emerald, the green variety of the mineral beryl. Emerald is one of the most historically valued gemstone minerals and is recognised for its distinctive green colour produced by trace elements within the crystal structure.The stone has been shaped and polished through a tumbling process to produce a smooth finish that highlights the natural colour and internal features of the emerald-bearing material. The listing photographs show the exact specimen you will receive, allowing collectors and buyers to examine the individual colour patterns and mineral texture before purchase.This crystal is a genuine natural specimen and includes a Certificate of Authenticity lifetime guarantee generic card, confirming the authenticity of the mineral.Please refer to the photographs for full sizing and scale. MINERAL IDENTIFICATION – EMERALD (BERYL)Emerald is the green variety of beryl, a mineral species composed of beryllium aluminium silicate. Beryl forms a number of well-known gemstone varieties including emerald, aquamarine, heliodor, and morganite.Key mineralogical characteristics include:
• Mineral Name: Beryl
• Gem Variety: Emerald
• Chemical Composition: Beryllium Aluminium Silicate (Be₃Al₂Si₆O₁₈)
• Crystal System: Hexagonal
• Mohs Hardness: Approximately 7.5–8
• Transparency: Transparent to opaque depending on crystal quality
• Typical Colour: Medium to deep greenThe green colour in emerald is typically produced by trace elements such as chromium or vanadium incorporated into the beryl crystal lattice during formation.Beryl crystals naturally grow as hexagonal prismatic crystals, though when found in host rock or polished forms such as tumblestones, the crystal structure may not be externally visible. GEOLOGICAL FORMATIONEmerald forms in specific geological environments where beryllium-rich fluids interact with chromium- or vanadium-bearing host rocks. This combination of chemical elements is relatively uncommon, which contributes to emerald’s rarity compared with other beryl varieties.Typical geological environments where emerald forms include:
• Hydrothermal veins within metamorphic rock
• Pegmatite systems rich in beryllium
• Metamorphosed sedimentary formations containing chromium-bearing mineralsEmerald deposits are often associated with minerals such as:
• Quartz
• Feldspar
• Mica
• Calcite
• PyriteDuring crystal growth, emerald commonly develops natural internal inclusions. These inclusions are part of the crystal’s geological formation and can help identify natural emerald material. NATURAL COLOUR AND INTERNAL FEATURESEmerald is widely recognised for its rich green colour spectrum, which can range from lighter green tones to deep emerald green depending on the concentration of trace elements present during formation.Natural emerald specimens frequently display:
• Colour zoning or variation within the crystal
• Small mineral inclusions trapped during growth
• Areas of translucency and opacity within the stoneIn polished forms such as tumblestones, these features may appear as subtle patterns or natural textures beneath the polished surface. TUMBLESTONE CRAFTSMANSHIPThis specimen has been shaped into a tumblestone, created by polishing rough mineral fragments in a rotating drum using progressively finer abrasives. The tumbling process smooths the stone’s surface and enhances the natural colour of the emerald-bearing material.Tumblestones are popular among mineral collectors because they provide:
• Smooth tactile surfaces
• Compact sizes suitable for display or carrying
• Enhanced visibility of natural mineral colour
• Durable polished finishesPolished emerald tumblestones allow collectors to appreciate the colour of the mineral even when the raw crystal form is not visible. MINERAL COLLECTING AND DISPLAYEmerald is one of the most well-known gemstone minerals in the world and is highly valued by collectors for both its colour and geological rarity. In polished form, emerald-bearing stones offer an accessible way to appreciate this mineral variety.This specimen may appeal to:
• Mineral and crystal collectors
• Geological study collections
• Polished stone and lapidary collections
• Decorative natural stone displays
• Unique natural gift itemsIn some cultural traditions, emerald has been traditionally associated with symbolic or spiritual interpretations. These associations are belief-based and cultural rather than scientific uses.Because the listing photographs show the actual specimen, buyers can be confident they are purchasing the exact tumblestone shown. AUTHENTIC NATURAL EMERALD SPECIMENThis A Grade Emerald tumblestone is a genuine natural beryl mineral specimen carefully selected for its colour and polished finish.The crystal includes a Certificate of Authenticity lifetime guarantee generic card, confirming the authenticity of the mineral specimen.Please review the listing photographs for full sizing and scale, as they form part of the item description and clearly show the exact stone you will receive.
of natural emerald, the green variety of the mineral beryl. Emerald is one of the most historically valued gemstone minerals and is recognised for its distinctive green colour produced by trace elements within the crystal structure.The stone has been shaped and polished through a tumbling process to produce a smooth finish that highlights the natural colour and internal features of the emerald-bearing material. The listing photographs show the exact specimen you will receive, allowing collectors and buyers to examine the individual colour patterns and mineral texture before purchase.This crystal is a genuine natural specimen and includes a Certificate of Authenticity lifetime guarantee generic card, confirming the authenticity of the mineral.Please refer to the photographs for full sizing and scale. MINERAL IDENTIFICATION – EMERALD (BERYL)Emerald is the green variety of beryl, a mineral species composed of beryllium aluminium silicate. Beryl forms a number of well-known gemstone varieties including emerald, aquamarine, heliodor, and morganite.Key mineralogical characteristics include:
• Mineral Name: Beryl
• Gem Variety: Emerald
• Chemical Composition: Beryllium Aluminium Silicate (Be₃Al₂Si₆O₁₈)
• Crystal System: Hexagonal
• Mohs Hardness: Approximately 7.5–8
• Transparency: Transparent to opaque depending on crystal quality
• Typical Colour: Medium to deep greenThe green colour in emerald is typically produced by trace elements such as chromium or vanadium incorporated into the beryl crystal lattice during formation.Beryl crystals naturally grow as hexagonal prismatic crystals, though when found in host rock or polished forms such as tumblestones, the crystal structure may not be externally visible. GEOLOGICAL FORMATIONEmerald forms in specific geological environments where beryllium-rich fluids interact with chromium- or vanadium-bearing host rocks. This combination of chemical elements is relatively uncommon, which contributes to emerald’s rarity compared with other beryl varieties.Typical geological environments where emerald forms include:
• Hydrothermal veins within metamorphic rock
• Pegmatite systems rich in beryllium
• Metamorphosed sedimentary formations containing chromium-bearing mineralsEmerald deposits are often associated with minerals such as:
• Quartz
• Feldspar
• Mica
• Calcite
• PyriteDuring crystal growth, emerald commonly develops natural internal inclusions. These inclusions are part of the crystal’s geological formation and can help identify natural emerald material. NATURAL COLOUR AND INTERNAL FEATURESEmerald is widely recognised for its rich green colour spectrum, which can range from lighter green tones to deep emerald green depending on the concentration of trace elements present during formation.Natural emerald specimens frequently display:
• Colour zoning or variation within the crystal
• Small mineral inclusions trapped during growth
• Areas of translucency and opacity within the stoneIn polished forms such as tumblestones, these features may appear as subtle patterns or natural textures beneath the polished surface. TUMBLESTONE CRAFTSMANSHIPThis specimen has been shaped into a tumblestone, created by polishing rough mineral fragments in a rotating drum using progressively finer abrasives. The tumbling process smooths the stone’s surface and enhances the natural colour of the emerald-bearing material.Tumblestones are popular among mineral collectors because they provide:
• Smooth tactile surfaces
• Compact sizes suitable for display or carrying
• Enhanced visibility of natural mineral colour
• Durable polished finishesPolished emerald tumblestones allow collectors to appreciate the colour of the mineral even when the raw crystal form is not visible. MINERAL COLLECTING AND DISPLAYEmerald is one of the most well-known gemstone minerals in the world and is highly valued by collectors for both its colour and geological rarity. In polished form, emerald-bearing stones offer an accessible way to appreciate this mineral variety.This specimen may appeal to:
• Mineral and crystal collectors
• Geological study collections
• Polished stone and lapidary collections
• Decorative natural stone displays
• Unique natural gift itemsIn some cultural traditions, emerald has been traditionally associated with symbolic or spiritual interpretations. These associations are belief-based and cultural rather than scientific uses.Because the listing photographs show the actual specimen, buyers can be confident they are purchasing the exact tumblestone shown. AUTHENTIC NATURAL EMERALD SPECIMENThis A Grade Emerald tumblestone is a genuine natural beryl mineral specimen carefully selected for its colour and polished finish.The crystal includes a Certificate of Authenticity lifetime guarantee generic card, confirming the authenticity of the mineral specimen.Please review the listing photographs for full sizing and scale, as they form part of the item description and clearly show the exact stone you will receive.
