📊 Valuation Metrics

Valuation Metrics

The factors that determine what a Moldavite specimen is actually worth.

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Weight

Primary Driver

Weight is the single most important factor in Moldavite valuation. Larger specimens are exponentially rarer — the relationship between size and price is not linear but follows a steep curve.

Price-Per-Gram Tiers (2024–2026 Market)

Weight Range	Relative Rarity	Approx. $/gram	Notes
Under 3g	Common	$8–$25	Fragments, small chips, wholesale lots
3g – 10g	Available	$20–$60	Most retail specimens fall here
10g – 20g	Uncommon	$40–$100	Collector-grade threshold
20g – 50g	Rare	$80–$200	Museum-quality candidates
50g – 100g	Very Rare	$150–$400+	Significant specimens, auction-worthy
100g+	Exceptional	$300–$1,000+	World-class; fewer than ~100 known

Key insight: A 50g specimen isn't worth 5× a 10g specimen — it can be worth 10–20× more, because the rarity curve steepens dramatically above 20g.

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Color & Hue

High Impact

Moldavite's color ranges from pale yellow-green to deep forest green, with rare brownish specimens. Color directly affects desirability and price.

Hue	Desirability	Price Premium
Deep forest green	★★★★★	Highest — the classic "Moldavite green"
Medium green	★★★★	Strong — most desirable for jewelry
Olive green	★★★	Standard — good value tier
Yellow-green / pale	★★	Lower — though rare pale specimens can command premiums as curiosities
Brown / brownish	★★	Lower generally — Moravian specimens often brownish; some collectors prize this

Regional variation: South Bohemian Moldavites tend toward vivid green; Moravian specimens often have a brownish or olive cast. Color alone doesn't determine origin — but it correlates.

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Transparency & Clarity

High Impact

Unlike most tektites (which are opaque black glass), Moldavite is translucent to transparent. Higher transparency commands significantly higher prices, especially for faceting-grade material.

Grade	Description	Price Multiplier
Gem-grade transparent	Light passes freely; suitable for faceting	2–5× baseline
High translucency	Strong light transmission; internal features visible	1.5–2× baseline
Standard translucent	Light passes but diffused; most specimens	Baseline
Low translucency	Minimal light; thick or heavily included	0.5–0.8× baseline

Backlight test: Hold the specimen to a strong light. Gem-grade material will glow vivid green throughout. This is the fastest quality check.

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Surface Texture (Sculpting)

High Impact

Moldavite's distinctive surface texture — called sculpting — is produced by chemical etching from acidic groundwater over millions of years. The depth, pattern, and preservation of sculpting is a major value driver.

Texture Type	Description	Value Impact
Deep spiky ("hedgehog")	Pronounced spines and ridges; Besednice specialty	Premium — most sought-after
Deep channeled	Flowing grooves and ridges across the surface	High — excellent display pieces
Medium sculpting	Clear texture but less pronounced	Standard — most specimens
Light / smooth	Minimal texture; partially eroded or tumbled	Lower — less character
Waterworn / river-tumbled	Smoothed by water transport; texture erased	Lowest for raw — but can be gem-grade for cutting

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Shape & Morphology

Medium–High Impact

Moldavite's shape reflects its flight dynamics during ejection. Certain shapes are far rarer than others and command premiums.

Shape	Rarity	Premium	Notes
Perfect teardrop / sphere	Very rare	Very high	Indicates complete rotational flight; museum pieces
Disc / lens	Uncommon	High	Flattened by aerodynamic forces; classic form
Dumbbell / elongated	Uncommon	High	Rotational stretching; dramatic display
Drop / splash	Available	Standard+	Common aerodynamic form; good specimens still prized
Irregular / fragment	Common	Baseline	Broken from larger pieces; most affordable tier

Completeness matters: An intact specimen with preserved original surfaces on all sides is worth dramatically more than a fragment of equal weight, even if both come from the same locality.

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Locality & Provenance

Medium Impact

Where a Moldavite was found matters — both for scientific value and collector desirability. Some localities are now permanently exhausted.

Locality	Status	Premium	Known For
Besednice	Depleted	Highest	Legendary spiky "hedgehog" specimens
Chlum nad Malší	Limited	High	Classic drops, good transparency
Slavče	Limited	Moderate–High	Large specimens, museum quality
Ločenice	Limited	Standard+	Varied morphology, surface sculpting
Moravian sites	Limited	Standard	Smaller, brownish-green; affordable entry point

Provenance premium: A specimen with documented collection history (who found it, when, exact GPS coordinates) commands 20–50% more than an identical undocumented piece. Old-collection specimens from depleted sites are especially prized.

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Condition & Integrity

High Impact

Damage significantly reduces value. Key condition factors:

Condition	Description	Value Impact
Mint / pristine	No chips, cracks, or fresh breaks; all original surfaces	Full value
Minor contact damage	Small chips or dings from collection/storage	-10 to -20%
Partial break	One side shows a fresh conchoidal fracture	-30 to -50%
Major damage	Multiple breaks, missing sections	-50 to -80%
Fragment	Broken piece with no complete original surface	Wholesale pricing only

Combined Valuation Framework

Professional dealers evaluate Moldavite across all metrics simultaneously. Here's a simplified scoring framework:

Weight

35%

Transparency

20%

Color

15%

Texture

10%

Shape

10%

Condition

Provenance

Red Flags — When Price Doesn't Match Metrics

If a listing doesn't align with these metrics, investigate further:

🚩 Large specimen, low price — likely fake, repaired, or misweighed
🚩 "Besednice" without provenance documentation — site is depleted; undocumented claims are suspect
🚩 Perfect shape + perfect texture + gem transparency at any reasonable price — extremely rare combination; verify authenticity
🚩 Uniform green without internal flow lines — natural Moldavite always shows schlieren (flow structures) when backlit
🚩 Wet-looking or overly glossy surface — may be coated, treated, or synthetic glass

🔐 Learn authentication methods →