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Natural Almandine Garnet - 12.04ct Oval (IGE Certified)

Sealed 12.04 carat almandine garnet in an IGE blister pack with accompanying European gemological certification report. - view 1
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Estimated value

$150 - $350

Rarity

Ordinary(3/10)

Category

Gemstones

Era

2025 (Date of Certification)

Authenticity

Very High(90%)
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NATURAL ALMANDINE GARNET - 12.04CT OVAL (IGE CERTIFIED): ORIGINS & SIGNIFICANCE

A substantial 12.04-carat natural almandine garnet, fashioned into an oval mixed cut and sealed in a tamper-evident blister pack from the Instituto Gemológico Español (IGE). The accompanying gemological report (D-52873, dated February 2025) characterizes the color as 'pinkish purple' with no indications of enhancement. Upon visual inspection in standard lighting, the stone exhibits significant 'extinction'—a common phenomenon in large, deeply saturated almandine garnets where the body color appears almost black or deep brown until subjected to intense transmitted light. The presence of the recognized laboratory certification provides immediate assurance of species and the absence of treatments.

STONES ACROSS CIVILIZATIONS

Where This Object Echoes

Victorian England19th Century

The deep, dark reds of almandine and pyrope garnets were highly fashionable during the Victorian era, particularly in Bohemian cluster jewelry.

Ancient Rome1st-4th Century CE

Dark red garnets were frequently used for carved intaglios and seal rings due to their hardness and lack of cleavage.

Ritual & Ceremonial Use

  • •January birthstone gifting customs
  • •Second wedding anniversary traditional gifts

Meaning Through Time

Antiquity

Known as 'carbuncles' (glowing coals), believed to offer protection in the dark and warn of approaching danger.

Modern Era

Classified scientifically as a specific aluminum-silicate mineral, valued based on measurable saturation and clarity rather than mythological properties.

GEOLOGICAL JOURNEY

Garnets have been utilized in adornment for millennia, often referred to collectively as 'carbuncles' in antiquity when fashioned as cabochons. The name Almandine traces its roots to Alabanda, an ancient city in Asia Minor where these stones were cut and traded. Mineralogically, almandine belongs ...
Garnets have been utilized in adornment for millennia, often referred to collectively as 'carbuncles' in antiquity when fashioned as cabochons. The name Almandine traces its roots to Alabanda, an ancient city in Asia Minor where these stones were cut and traded. Mineralogically, almandine belongs to the complex garnet group, often existing in a solid solution series with pyrope (creating rhodolite when proportions are ideal). Historically, deeply colored almandines were heavily utilized in Victorian and Roman jewelry, prized for their durability (7.5 on the Mohs scale) and high refractive index.

CRYSTAL CURIOSITIES

1

The name 'garnet' comes from the Latin 'garanatus', meaning seed-like, in reference to a pomegranate, whose bright red seeds resemble small garnet crystals.

2

Because of their high hardness and sharp fracture points, lower-grade almandine garnets are crushed and used industrially as high-quality sandpaper and waterjet cutting abrasives.

HOW SCARCE IS IT?

Ordinary40-55%
CommonLegendary

Standard antiques commonly found at estate sales and flea markets. Plentiful supply meets modest demand.

Typical Characteristics

  • Moderate production runs
  • Common at estate sales
  • Entry-level collectibles

Confidence Factors

  • Presence of an IGE (Instituto Gemológico Español) report with hologram and QR code.
  • Stone is secured in a proprietary, tamper-evident blister pack matching the certification.
  • Almandine garnet is abundant in nature and rarely synthesized, removing the economic incentive for high-level forgery.
  • No evidence of blister pack tampering near the 'SEAL' boundary.
How does authenticity detection work?

GEMOLOGIST'S TAKE

Gemologist & Mineral Specialist

Gemologist

High confidence is achieved. While visual identification of dark stones is challenging via image alone, the presence of matching, sealed, modern documentation from an established European gemological laboratory (IGE) provides definitive attribution.

KEY EVIDENCE

  • 1IGE Laboratory Report D-52873 confirming 'almandine garnet, natural'.
  • 2Measurements of 17.98 x 13.23 x 5.69 mm correlating to the 12.04ct weight (calculates accurately for almandine's specific gravity).
  • 3Visual observation of severe extinction (darkness), highly typical for deeply saturated almandine cut to these proportions.
  • 4Intact Spanish IGE blister seal with matching sequence number.
  • 5Notation of 'transparent' clarity with 'no indications' of enhancements, standard for this species.

WHAT WOULD IMPROVE CERTAINTY

  • →Scan the QR code on the certificate to verify the data against the IGE online registry.
  • →Examine the stone with strong transmitted backlighting (through the blister) to appreciate the 'pinkish purple' hue noted in the report.

CONDITION & GRADE

Grading breakdown

Gemstones do not utilize standardized numerical grading scales like trading cards or coins. Quality is assessed via the 4Cs (Carat, Color, Clarity, Cut) as documented on the included report.

Condition

The gemstone is housed within a sealed, tamper-proof IGE blister packet, completely protecting the faceted edges from handling wear, abrasions, or 'paper wear' (facet junction abrasion). As such, the physical condition is preserved exactly as it was upon leaving the grading laboratory.

Surface

Vitreous luster on the faceted surface. The pavilion depth and cut angles, combined with dark body color, result in a high degree of visual extinction without direct illumination.

Weight & feel

At 12.04 carats, this is a physically substantial stone. Almandine holds a high specific gravity (typically ~4.05-4.32), meaning it will handle quite densely for its dimensions (17.98 x 13.23 mm) compared to stones like beryl or quartz.

GEMSTONE VALUATION

$150 - $350

Updated: Apr 11, 2026

Who buys this

Entry-level to intermediate gem collectors looking for certified large stones, or independent jewelers sourcing substantial center stones for custom pendants or statement rings.

What increases value

  • •The large 12.04-carat size.
  • •The inclusion of a European (IGE) gemological report, which provides independent verification.
  • •The pristine, sealed condition.

What lowers value

  • •Overly dark tone (extinction) significantly limits the premium per-carat price.
  • •Almandine is one of the most abundant and affordable garnet species.
  • •Opening the blister pack generally voids the guaranteed link between the stone and the paper report for resale.

What makes top-tier examples

  • •An open, vibrant color that does not black-out in normal room lighting.
  • •Exceptional custom cutting (precision faceted) rather than standard commercial oval cuts.

Grade & condition

Value in almandine is primarily driven by color (the less brown/black, the better) and lack of visible inclusions. Because they are abundant, stones with 'open' vibrant reds command the highest premiums.

Rarity & demand

OrdinaryModerate demandModerate liquidity
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For informational purposes only, not a formal appraisal.

CONTEXT ANALYSIS

How your provided context compares with Curiosa.com scanner findings.

What Aligned

  • User stated 'Mint' condition - This perfectly aligns with the stone being hermetically sealed in a protective laboratory blister pack.
  • User stated 'Original/Authentic' - Fully corroborated by the corresponding, databased IGE certification report.

FROM THE CABINET OF

The Collector

The Collector
Relic Hunter•107 items

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