The TWSBI Diamond Mini is a shorter, pocket-sized version of the Diamond 580 fountain pen. The barrel is shorter than the standard Diamond series pens but the cap can be posted by screwing onto the end of the barrel to create a full-size pen. Due to the piston filling mechanism the TWSBI Mini has a big ink capacity for a small pen. It can be filled from any fountain pen ink bottle, but for clean and easy refilling, try a TWSBI Diamond 50 Ink Bottle, which is specially designed for refilling TWSBI Diamond fountain pens. A wide range of spare nibs are available including italic nibs.
Note that the nib section of the Diamond Mini is not compatible with other TWSBI fountain pens (eg. Diamond 540, Diamond 580, Vac 700 and Micarta).
Transparent barrel and cap Aluminium grip section and filling mechanism Pocket pen Full length when cap posted
Transparent barrel and cap Pocket pen Full length when cap posted
Pocket pen Full length when cap posted Black cap and transparent barrel
Glass ink bottle Polished aluminium parts Internal reservoir Unique filling mode
Glass ink bottle Internal reservoir Unique filling mode
replacement nib for Diamond mini complete screw-in assembly easy to fit
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