Gemstone profile and identification guide
Laguna Agate
Laguna agate is a prized Mexican agate known for tight, colorful fortification banding.
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Overview
Laguna agate is a prized Mexican agate known for tight, colorful fortification banding.
Did you know? Fine Laguna agates are highly sought by agate cutters for exceptional band detail.
Use this profile as a collector reference and educational guide for quick on-page comparison, then validate with the interactive identification system.
Identification
Name: Laguna Agate
Scientific classification: Silicate (Agate Chalcedony Variety)
Hardness: 7 Mohs
Transparency: translucent
Lustre: waxy
Crystal system: Trigonal (microcrystalline aggregate)
Primary colour: Red
Secondary colour: Pink
Colour family: Reds
Dense multicolor fine banding with Mexican locality association is characteristic.
Verification Status
Status: verified-core-fields
Reference priority: GIA, Gem-A, Mindat, International Gem Society
Core identity, locality, and physical-property fields reviewed against standard gemological references.
Trade-name entries include conservative composition/treatment disclosures where needed.
Physical Properties
Hardness category: hard
Hardness value: 7 Mohs
Chemical composition: Silicon dioxide (SiO2)
Crystal system: Trigonal (microcrystalline aggregate)
Common locations: Mexico (Chihuahua, Ojo Laguna region and surrounding localities)
Learn more: Gem-A gemstone education resources.
Colour Variations
Fine-banded agate with vivid reds, pinks, and whites, classically from Mexico.
Optical effects: Fine Banding
Detailed Gemology
Mineral species: Quartz (agate variety)
Mineral group: Quartz group
Chemical formula: Silicon dioxide (SiO2)
Mohs hardness: 7
Crystal system: Trigonal (microcrystalline aggregate)
Lustre: waxy
Transparency: translucent
Streak: White
Cleavage: None
Fracture: Conchoidal
Specific gravity: 2.58-2.64
Refractive index: 1.53-1.54
Optical phenomena: Fortification and fine banding
Colour range: Red, pink, orange, white combinations
Common inclusions: Plumes, fortification zones, occasional druzy quartz
Geological environment: Silica-rich volcanic cavity systems
Principal mining regions: Mexico (Chihuahua, Ojo Laguna region and surrounding localities)
Important commercial sources: Laguna agate is a locality-associated agate trade name centered on Mexico
Historical significance: One of the best-known collector agate locality categories.
Common treatments: Some agates in trade are dyed; verify natural color.
Synthetic or imitation forms: Dyed agates and glass imitations exist.
Common look-alikes: Dyed banded agate, carnelian agate composites
Jewellery uses: Used in cabochons, collector nodules, and precision lapidary slabs.
Care recommendations: Durable for jewelry and lapidary use; standard quartz care applies.
Cross-check profile data with GIA Gem Encyclopedia and Mindat entry for Laguna Agate.
Formation
Forms by rhythmic silica deposition in volcanic cavities producing concentric banding.
Origin
Laguna agate is a locality-associated agate trade name centered on Mexico
Uses
Best for: Used in cabochons, collector nodules, and precision lapidary slabs.
Ideal uses: Collector and lapidary pieces showcasing tight band structure.
Care
Durable for jewelry and lapidary use; standard quartz care applies.
Need another candidate? Use advanced gemstone search or return to the identification guide.
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Laguna Agate FAQ
How can I identify Laguna Agate?
Compare hardness (7 Mohs), crystal system (Trigonal (microcrystalline aggregate)), colour profile, and lustre (waxy) with your sample. Then cross-check related gemstones listed above.
What colour range does Laguna Agate appear in?
Fine-banded agate with vivid reds, pinks, and whites, classically from Mexico.
Where is Laguna Agate commonly used?
Collector and lapidary pieces showcasing tight band structure.. For maintenance, follow the care guidance in this profile.
Scientific References
GIA: general gemstone identity (reviewed) - Batch 06 factual verification pass.
Gem-A: gemological terminology and testing references (reviewed) - Batch 06 factual verification pass.
Mindat: mineral species and principal localities (reviewed) - Batch 06 factual verification pass.
International Gem Society: gem trade context and treatment overview (reviewed) - Batch 06 factual verification pass.