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Robert Oster

Explore our collection of Robert Oster Signature Inks – made in Australia and described as well-behaved fountain pen inks. Each ink is produced in a just-in-time manner to meet demand and is bottled in recyclable PET plastic. Robert Oster inks are non-toxic and eco-friendly, crafted with care for both writing performance and environmental impact.

Looking for the full range or more? Browse all bottled fountain pen inks or shop ink samples to try before you commit.

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Robert Oster Lake of Fire ink, 50ml bottle, features a gold label and deep blue hue with a subtle red sheen, inspired by South Australia.

Lake of Fire - 50ml

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$23.00

$18.40

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Robert Oster Lake of Fire ink, 50ml bottle, features a gold label and deep blue hue with a subtle red sheen, inspired by South Australia.

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Lake of Fire - 50ml

$23.00 $18.40

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Robert Oster Bondi Blue fountain-pen ink, 50ml bottle, features a gold-foil label. Includes a vibrant blue ink swatch with darker sheen hints.

Bondi Blue - 50ml

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$23.00

$18.40

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Robert Oster Bondi Blue fountain-pen ink, 50ml bottle, features a gold-foil label. Includes a vibrant blue ink swatch with darker sheen hints.

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Bondi Blue - 50ml

$23.00 $18.40

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Robert Oster Rose Gold Antiqua (Shake 'N' Shimmy) - 50ml Bottled Ink

Rose Gold Antiqua (Shake 'N' Shimmy) - 50ml

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$31.00

$24.80

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Robert Oster Rose Gold Antiqua (Shake 'N' Shimmy) - 50ml Bottled Ink

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Rose Gold Antiqua (Shake 'N' Shimmy) - 50ml

$31.00 $24.80

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Bottle of Robert Oster Signature Ink, Taiwan Blue - 50ml, with a teal swatch displaying a pinky-red sheen, emphasizing vibrant, sustainable, and smooth-writing qualities.

Taiwan Blue - 50ml

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$23.00

$18.40

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Bottle of Robert Oster Signature Ink, Taiwan Blue - 50ml, with a teal swatch displaying a pinky-red sheen, emphasizing vibrant, sustainable, and smooth-writing qualities.

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Taiwan Blue - 50ml

$23.00 $18.40

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Blue Velvet Storm (Shake 'N' Shimmy) - 50ml bottle of shimmering Robert Oster ink with a close-up swatch showing its unique sheen.

Blue Velvet Storm (Shake 'N' Shimmy) - 50ml

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$31.00

$24.80

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Blue Velvet Storm (Shake 'N' Shimmy) - 50ml bottle of shimmering Robert Oster ink with a close-up swatch showing its unique sheen.

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Blue Velvet Storm (Shake 'N' Shimmy) - 50ml

$31.00 $24.80

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Robert Oster Signature Ink Sublime - 50ml black-glass bottle with gold label, shown with a circular swatch of bright grassy green ink.

Sublime - 50ml

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$23.00

$18.40

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Robert Oster Signature Ink Sublime - 50ml black-glass bottle with gold label, shown with a circular swatch of bright grassy green ink.

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Sublime - 50ml

$23.00 $18.40

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Robert Oster Yellow Sunrise - 50ml Bottled Ink

Yellow Sunrise - 50ml

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$23.00

$18.40

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Robert Oster Yellow Sunrise - 50ml Bottled Ink

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Yellow Sunrise - 50ml

$23.00 $18.40

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Robert Oster Signature Ink - Rose Gilt Tynte (Shake 'N' Shimmy), 50ml bottle with a circular swatch showing its shimmery metallic purple-pink shade.

Rose Gilt Tynte (Shake 'N' Shimmy) - 50ml

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$31.00

$24.80

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Robert Oster Signature Ink - Rose Gilt Tynte (Shake 'N' Shimmy), 50ml bottle with a circular swatch showing its shimmery metallic purple-pink shade.

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Rose Gilt Tynte (Shake 'N' Shimmy) - 50ml

$31.00 $24.80

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Burned Orange - 50ml Robert Oster Signature fountain-pen ink bottle beside a swatch of its coppery-brown hue, inspired by South Australia's natural palette.

Burned Orange - 50ml

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$23.00

$18.40

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Burned Orange - 50ml Robert Oster Signature fountain-pen ink bottle beside a swatch of its coppery-brown hue, inspired by South Australia's natural palette.

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Burned Orange - 50ml

$23.00 $18.40

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Robert Oster Signature ink bottle labeled Signature with a swatch of deep purple color, 50ml size, inspired by South Australia's palette.

Deep Purple - 50ml

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$23.00

$18.40

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Robert Oster Signature ink bottle labeled Signature with a swatch of deep purple color, 50ml size, inspired by South Australia's palette.

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Deep Purple - 50ml

$23.00 $18.40

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Bottle of Robert Oster Signature fountain-pen ink, Eucalyptus Leaf - 50ml, with a dark green/black ink swatch in the upper right corner.

Eucalyptus Leaf - 50ml

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$23.00

$18.40

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Bottle of Robert Oster Signature fountain-pen ink, Eucalyptus Leaf - 50ml, with a dark green/black ink swatch in the upper right corner.

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Sale

Eucalyptus Leaf - 50ml

$23.00 $18.40

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Bottle of Robert Oster Signature Ink, Black Violet - 50ml, featuring a dark violet/blue hue inset, inspired by South Australia's wine regions.

Black Violet - 50ml

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$23.00

$18.40

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Bottle of Robert Oster Signature Ink, Black Violet - 50ml, featuring a dark violet/blue hue inset, inspired by South Australia's wine regions.

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Sale

Black Violet - 50ml

$23.00 $18.40

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Robert Oster Signature Fountain Pen Ink in Fire Engine Red, 50ml bottle, features a gold label and a bright red ink swatch.

Fire Engine Red - 50ml

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$23.00

$18.40

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Robert Oster Signature Fountain Pen Ink in Fire Engine Red, 50ml bottle, features a gold label and a bright red ink swatch.

Sale

Fire Engine Red - 50ml

$23.00 $18.40

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Robert Oster Signature fountain pen ink bottle, Australian Sky Blue - 50ml, with a bright blue ink swatch, featuring a gold label.

Australian Sky Blue - 50ml

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$23.00

$18.40

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Robert Oster Signature fountain pen ink bottle, Australian Sky Blue - 50ml, with a bright blue ink swatch, featuring a gold label.

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Australian Sky Blue - 50ml

$23.00 $18.40

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Barossa Grape - 50ml Robert Oster Signature ink bottle with gold-foil label, showcasing its distinctive dark purple sheen in the upper right.

Barossa Grape - 50ml

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$23.00

$18.40

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Barossa Grape - 50ml Robert Oster Signature ink bottle with gold-foil label, showcasing its distinctive dark purple sheen in the upper right.

Sale

Barossa Grape - 50ml

$23.00 $18.40

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Robert Oster Australis Tea - 50ml Bottled Ink

Australis Tea - 50ml

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$23.00

$18.40

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Robert Oster Australis Tea - 50ml Bottled Ink

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Australis Tea - 50ml

$23.00 $18.40

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Robert Oster Australis Oak - 50ml Bottled Ink

Australis Oak - 50ml

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$23.00

$18.40

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Robert Oster Australis Oak - 50ml Bottled Ink

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Australis Oak - 50ml

$23.00 $18.40

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Robert Oster Melon Tea - 50ml Bottled Ink

Melon Tea - 50ml

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$23.00

$18.40

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Robert Oster Melon Tea - 50ml Bottled Ink

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Melon Tea - 50ml

$23.00 $18.40

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Robert Oster Blood Crimson - 50ml Bottled Ink

Blood Crimson - 50ml

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$23.00

$18.40

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Robert Oster Blood Crimson - 50ml Bottled Ink

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Blood Crimson - 50ml

$23.00 $18.40

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Robert Oster Signature ink bottle, Carbon Fire - 50ml, featuring a dark blue shade swatch in the corner, inspired by South Australian wine regions.

Carbon Fire - 50ml

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$23.00

$18.40

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Robert Oster Signature ink bottle, Carbon Fire - 50ml, featuring a dark blue shade swatch in the corner, inspired by South Australian wine regions.

/ 1 / 2

Sale

Carbon Fire - 50ml

$23.00 $18.40

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Robert Oster Signature ink bottle labeled Avocado - 50ml with a gold label, featuring a swatch of the ink color on the black plastic bottle.

Avocado - 50ml

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$23.00

$18.40

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Robert Oster Signature ink bottle labeled Avocado - 50ml with a gold label, featuring a swatch of the ink color on the black plastic bottle.

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Avocado - 50ml

$23.00 $18.40

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Robert Oster Signature Ink Marine - 50ml bottle with gold label, black cap, and visible teal swatch showcasing the unique dye-based ink.

Marine - 50ml

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$23.00

$18.40

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Robert Oster Signature Ink Marine - 50ml bottle with gold label, black cap, and visible teal swatch showcasing the unique dye-based ink.

Sale

Marine - 50ml

$23.00 $18.40

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Robert Oster Romeo & Juliet - 50ml Bottled Ink

Romeo & Juliet - 50ml

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$23.00

$18.40

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Robert Oster Romeo & Juliet - 50ml Bottled Ink

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Romeo & Juliet - 50ml

$23.00 $18.40

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Robert Oster Burgundy Chocolate Notes - 50ml Bottled Ink

Burgundy Chocolate Notes - 50ml

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$23.00

$18.40

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Robert Oster Burgundy Chocolate Notes - 50ml Bottled Ink

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Burgundy Chocolate Notes - 50ml

$23.00 $18.40

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Robert Oster Australian Opal Grey - 50ml Bottled Ink

Australian Opal Grey - 50ml

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$23.00

$18.40

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Robert Oster Australian Opal Grey - 50ml Bottled Ink

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Sale

Australian Opal Grey - 50ml

$23.00 $18.40

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Robert Oster Silver Fire & Ice (Shake 'N' Shimmy) - 50ml Bottled Ink

Silver Fire & Ice (Shake 'N' Shimmy) - 50ml

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$31.00

$24.80

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Robert Oster Silver Fire & Ice (Shake 'N' Shimmy) - 50ml Bottled Ink

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Sale

Silver Fire & Ice (Shake 'N' Shimmy) - 50ml

$31.00 $24.80

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Crystal Marine (Shake 'N' Shimmy) 50ml bottle with a teal/blue ink swatch featuring a purple shimmer, highlighting its rich color and sustainable craftsmanship.

Crystal Marine (Shake 'N' Shimmy) - 50ml

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$31.00

$24.80

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Crystal Marine (Shake 'N' Shimmy) 50ml bottle with a teal/blue ink swatch featuring a purple shimmer, highlighting its rich color and sustainable craftsmanship.

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Sale

Crystal Marine (Shake 'N' Shimmy) - 50ml

$31.00 $24.80

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Bottle of Robert Oster Signature fountain-pen ink in Bass Straight - 50ml, featuring a gold label and vibrant blue ink swatch.

Bass Straight - 50ml

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$23.00

$18.40

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Bottle of Robert Oster Signature fountain-pen ink in Bass Straight - 50ml, featuring a gold label and vibrant blue ink swatch.

/ 1 / 2

Sale

Bass Straight - 50ml

$23.00 $18.40

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Bottle of Robert Oster “Signature” Blue Black fountain-pen ink, 50ml, with a deep inky blue swatch showing subtle red-sheen flecks, reflecting Australian inspirations.

Blue Black - 50ml

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$23.00

$18.40

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Bottle of Robert Oster “Signature” Blue Black fountain-pen ink, 50ml, with a deep inky blue swatch showing subtle red-sheen flecks, reflecting Australian inspirations.

Sale

Blue Black - 50ml

$23.00 $18.40

More Details →

Astorquiza Rot - 50ml bottle of Robert Oster Signature fountain-pen ink, featuring a reddish-brown swatch beside the sleek black glass container.

Astorquiza Rot - 50ml

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$23.00

$18.40

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Astorquiza Rot - 50ml bottle of Robert Oster Signature fountain-pen ink, featuring a reddish-brown swatch beside the sleek black glass container.

Sale

Astorquiza Rot - 50ml

$23.00 $18.40

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Robert Oster Signature Spearmint - 50ml fountain-pen ink bottle with a gold label, displayed alongside a circular swatch of its teal/green shade.

Spearmint - 50ml

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$23.00

$18.40

X

Robert Oster Signature Spearmint - 50ml fountain-pen ink bottle with a gold label, displayed alongside a circular swatch of its teal/green shade.

/ 1 / 2

Sale

Spearmint - 50ml

$23.00 $18.40

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Robert Oster Australis Hydra - 50ml Bottled Ink

Australis Hydra - 50ml

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$23.00

$18.40

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Robert Oster Australis Hydra - 50ml Bottled Ink

/ 1 / 2

Sale

Australis Hydra - 50ml

$23.00 $18.40

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Robert Oster Barossa Gilt (Shake 'N' Shimmy) - 50ml Bottled Ink

Barossa Gilt (Shake 'N' Shimmy) - 50ml

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$31.00

$24.80

X

Robert Oster Barossa Gilt (Shake 'N' Shimmy) - 50ml Bottled Ink

/ 1 / 2

Sale

Barossa Gilt (Shake 'N' Shimmy) - 50ml

$31.00 $24.80

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Robert Oster Signature Clay Red fountain-pen ink, 50ml bottle, with a deep red-black swatch, inspired by South Australia's wine regions.

Clay Red - 50ml

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$23.00

$18.40

X

Robert Oster Signature Clay Red fountain-pen ink, 50ml bottle, with a deep red-black swatch, inspired by South Australia's wine regions.

/ 1 / 2

Sale

Clay Red - 50ml

$23.00 $18.40

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Blue Sea - 50ml

Blue Sea - 50ml

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$23.00

$18.40

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Blue Sea - 50ml

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Blue Sea - 50ml

$23.00 $18.40

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Robert Oster Signature Ink - Heart of Gold (Shake 'N' Shimmy), 50ml bottle, features a metallic gold shimmer and gray cap, showcasing its Australian craftsmanship.

Heart of Gold (Shake 'N' Shimmy) - 50ml

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$31.00

$24.80

X

Robert Oster Signature Ink - Heart of Gold (Shake 'N' Shimmy), 50ml bottle, features a metallic gold shimmer and gray cap, showcasing its Australian craftsmanship.

/ 1 / 2

Sold Out

Heart of Gold (Shake 'N' Shimmy) - 50ml

$31.00 $24.80

This product is sold out

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Hot Pink - 50ml Robert Oster Signature fountain pen ink bottle with a circular swatch, showcasing a vibrant shade inspired by South Australia's palette.

Hot Pink - 50ml

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$23.00

$18.40

X

Hot Pink - 50ml Robert Oster Signature fountain pen ink bottle with a circular swatch, showcasing a vibrant shade inspired by South Australia's palette.

/ 1 / 2

Sold Out

Hot Pink - 50ml

$23.00 $18.40

This product is sold out

More Details →

Bottle of Robert Oster Signature “True Blue” fountain-pen ink, 50ml, with gold-foil label, shown next to a deep blue color swatch with red sheen.

True Blue - 50ml

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$23.00

$18.40

X

Bottle of Robert Oster Signature “True Blue” fountain-pen ink, 50ml, with gold-foil label, shown next to a deep blue color swatch with red sheen.

/ 1 / 2

Sold Out

True Blue - 50ml

$23.00 $18.40

This product is sold out

More Details →

Robert Oster Signature fountain-pen ink, Direct Sun - 50ml, with a swatch showcasing its rich red hue, inspired by South Australia's wine regions.

Direct Sun - 50ml

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$23.00

$18.40

X

Robert Oster Signature fountain-pen ink, Direct Sun - 50ml, with a swatch showcasing its rich red hue, inspired by South Australia's wine regions.

Sold Out

Direct Sun - 50ml

$23.00 $18.40

This product is sold out

More Details →

Robert Oster Sterling Silver (Shake 'N' Shimmy) - 50ml Bottled Ink

Sterling Silver (Shake 'N' Shimmy) - 50ml

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$31.00

$24.80

X

Robert Oster Sterling Silver (Shake 'N' Shimmy) - 50ml Bottled Ink

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Sold Out

Sterling Silver (Shake 'N' Shimmy) - 50ml

$31.00 $24.80

This product is sold out

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