Rare 4-Color Fluorescent Thumbnail Esperite Hardystonite Willemite Franklinite For Sale

Premium 4-Color Fluorescent Thumbnail Specimen with Original Collection Tag

Locality: Historic Franklin Mine, Franklin, Sussex County, New Jersey, USA

For your consideration is a choice, highly elite multi-mineral fluorescent thumbnail specimen from the world-famous Franklin Mine. This is not your standard green/red zinc ore mix; this piece features a heavy presence of highly sought-after rare silicates that define top-tier New Jersey collections.

Specimen Attributes & Metrics:

* Classification: Thumbnail Specimen

* Dimensions: Approx. 1.5" L x 1.5" W x 0.25" D

* Weight: 22 Grams

* Provenance: Includes the original hand-written collection tag detailing the mineral breakdown.

Fluorescent Profile & Mineral Mineralogy:

This piece showcases a stunning, high-contrast response under Shortwave UV light:

1. ESPERITE: Fluoresces a brilliant, intense canary/lemon yellow (Highly sought after and rare!).

2. HARDYSTONITE: Fluoresces a deep, distinctive purple/blue-violet matrix tone.

3. WILLEMITE: Fluoresces a vivid, fiery neon green (also shows minor activation under LW UV).

4. CALCITE: Fluoresces a classic cherry-red/bright orange.

5. FRANKLINITE: The non-fluorescent black metallic grains provide excellent visual contrast blocking out the brilliant matrix zones.

Lighting Requirement Notice:

Please note that while Willemite tracks slightly under Longwave (LW) UV, this premium 4-color layout requires a high-quality Shortwave (SW 254nm) UV mineral lamp to correctly activate the Esperite yellow and Hardystonite purple zones. Standard household blacklights or cheap LW LEDs will not show these reactions.

An excellent, razor-sharp investment piece for a serious UV cabinet or advanced regional thumbnail collection.

*Photos are of the exact specimen you will and pictures were taken under longwave uv light