A / Museum

• Highly saturated, even blue with clear radial sprays or botryoidal velour.
• Excellent relief and contrast; harmonious matrix.
• Desirable association (e.g., with dioptase or malachite rosettes).
• Documented provenance from famous localities.

B / Collector

• Good blue with minor zoning; texture readable but less fine.
• Small, stable repairs acceptable; overall strong presentation.
• Common associations; locality noted but not premier.

C / Study

• Paler or mixed color; textures obscured or patchy.
• Visible cleavage steps, chips, or unstable crusts.
• Best for teaching paragenesis and hands‑on study.

A‑Grade (“Azure Scribe”)

• Rich, even blue; minimal pits or undercutting.
• Uniform texture (fine felted or graceful veins).
• Clean, even dome; bezel‑friendly edges.

B‑Grade (“Lagoon Map”)

• Good color with some mixed greens (malachite/chrysocolla).
• Acceptable micro‑porosity or matt spots.
• Attractive pattern outweighs minor surface texture.

C‑Grade (“Study Slate”)

• Paler areas; noticeable pits or pull‑outs.
• Backing or stabilization recommended for wear.

Kaokoveld (Kunene Region), Namibia

Famous for shattuckite‑in‑quartz — blue spherulitic mats captured as phantom planes and veils. Also drusy coatings with dioptase/plancheite. Look for clear quartz hosts and saturated, well‑defined blue layers. :contentReference[oaicite:9]{index=9}

Label idea: Kaoko Night‑Blue (phantom in quartz).

Shattuck Mine, Bisbee, Arizona (USA)

Type locality. Classic pseudomorphs after malachite and small blue spherules; coveted for history and teaching value. :contentReference[oaicite:10]{index=10}

Label idea: Bisbee Azure Scribe (type locality).

Ajo, Arizona (New Cornelia Mine, USA)

Well‑known for blue masses and mixes with quartz/malachite; a key Arizona source for lapidary. RRUFF documents confirmed Ajo material. :contentReference[oaicite:11]{index=11}

Label idea: Ajo Sky‑Script.

Milpillas Mine, Sonora (Mexico)

Modern copper deposit with confirmed shattuckite occurrences, sometimes paired with quartz and malachite. :contentReference[oaicite:12]{index=12}

Label idea: Santa Cruz Blue Loom.

Katanga Copper Crescent (DR Congo)

Tantara/Kambove area yields vivid blue masses with dioptase/malachite; some cabbing stock has been stabilized in the market — disclose when known. :contentReference[oaicite:13]{index=13}

Label idea: Katanga River‑Ink.

Notes on Tsumeb (Namibia)

Shattuckite is well known across northern Namibia, but its specific occurrence at Tsumeb has been questioned in museum notes; label cautiously and rely on documentation. :contentReference[oaicite:14]{index=14}

Specimen Labels

• Azure Scribe (shattuckite radial sprays on quartz, Kaokoveld, Namibia)
• Bisbee Night‑Blue (shattuckite pseudomorph after malachite, Shattuck Mine, AZ)

Cabochons & Jewelry

• River Glyph Cab (shattuckite + quartz, Ajo, AZ)
• Sky‑Ink in Glass Pendant (shattuckite phantom in quartz, Kaokoveld)

Composite Pieces

If a piece blends copper minerals in quartz (e.g., chrysocolla/malachite/shattuckite/dioptase), use a creative title plus a factual subtitle listing identified species. Avoid implying a separate “species.” :contentReference[oaicite:15]{index=15}