Robert Oster Summer Storm fountain pen ink swatch showing color and shading

Robert Oster Summer Storm Fountain Pen Ink — 50 mL

50 mL
$20.00
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Robert Oster Summer Storm fountain pen ink swatch showing color and shading

Robert Oster Summer Storm Fountain Pen Ink — 50 mL

$20.00
Size50 mL

Robert Oster Summer Storm is a changeable grey-purple whose transformation happens on the page. Freshly written lines can begin dull grey, move through blue as they dry, and settle into a muted purple.

Independent reviews consistently highlight this color shift and its medium-to-strong shading. The ink tends to write drier than many Robert Oster colors and shows no meaningful sheen or shimmer. It is at its best in medium, broad, or otherwise generous nibs that keep the pale tones legible.

Ink character

  • Color: dusky grey-blue-purple
  • Shading: medium to high
  • Sheen: none
  • Shimmer: none
  • Flow: dry to moderately dry
  • Water resistance: low
  • Best suited to: journaling, letters, medium and broad nibs

Summer Storm is less a single color than a weather change in miniature: grey when it arrives, blue in transition, and purple once the page is still.

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