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Elevate your collection with this stunning 20c Dioptase block of 4 stamps from Namibia's 1st Definitive Series Mines and Minerals, issued on 2 January 1991.
💎 Subject: Dioptase (CuSiO·6HO) a vibrant green copper silicate mineral
🖌 Artist: J. van Niekerk
📅 Issue Date: 1991-01-02
📦 Denomination: 20 cents
🖨 Color Strip: 72 Cyan, 73 Yellow, 74 Magenta, 75 Black
📏 Layout: Corner Block of 4 with margins and color calibration bars
🔖 Condition: Mint Never Hinged (MNH)
Special Features:
Full margin inscriptions with print date and Namibia PT logo
Bright, detailed crystal illustrations on quality gum-backed paper
Scarce in mint condition with full color bar intact
🧲 Perfect for:
Mineral & geology-themed collections
Southern African definitive stamp sets
Display or resale within top-tier philatelic circles
📦 Combined shipping available browse our other Mines & Minerals listings to complete your 1991 Namibia set!
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