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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 Ocean - 2ml Ink Sample

Ocean - 2ml

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$1.70

$1.36

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Robert Oster Ocean - 2ml Ink Sample

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Ocean - 2ml

$1.70 $1.36

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Robert Oster Black 'N' Blue (Shake 'N' Shimmy) - 50ml Bottled Ink

Black 'N' Blue (Shake 'N' Shimmy) - 50ml

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$31.00

$24.80

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Robert Oster Black 'N' Blue (Shake 'N' Shimmy) - 50ml Bottled Ink

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Black 'N' Blue (Shake 'N' Shimmy) - 50ml

$31.00 $24.80

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Blue Water Ice - 50ml: Robert Oster “Signature” fountain-pen ink in a sleek black bottle with gold-foil label, featuring a vibrant blue ink swatch.

Blue Water Ice - 50ml

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$23.00

$18.40

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Blue Water Ice - 50ml: Robert Oster “Signature” fountain-pen ink in a sleek black bottle with gold-foil label, featuring a vibrant blue ink swatch.

Sale

Blue Water Ice - 50ml

$23.00 $18.40

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Red Orange - 2ml ink sample, featuring an abstract red-orange splash on white. The Desk Bandit watermark subtly appears at the bottom.

Red Orange - 2ml

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$1.70

$1.36

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Red Orange - 2ml ink sample, featuring an abstract red-orange splash on white. The Desk Bandit watermark subtly appears at the bottom.

Sale

Red Orange - 2ml

$1.70 $1.36

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Sepia Nights - 2ml

Sepia Nights - 2ml

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$1.70

$1.36

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Sepia Nights - 2ml

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Sepia Nights - 2ml

$1.70 $1.36

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Robert Oster Silent Nite - 2ml Ink Sample

Silent Nite - 2ml

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$1.70

$1.36

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Robert Oster Silent Nite - 2ml Ink Sample

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Silent Nite - 2ml

$1.70 $1.36

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Frankly Scarlet - 2ml ink sample, displaying a deep burgundy-red wash with subtle variations, highlighting Robert Oster's dye-based pigment on paper.

Frankly Scarlet - 2ml

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$1.70

$1.36

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Frankly Scarlet - 2ml ink sample, displaying a deep burgundy-red wash with subtle variations, highlighting Robert Oster's dye-based pigment on paper.

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Sale

Frankly Scarlet - 2ml

$1.70 $1.36

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Robert Oster's Royal Red - 2ml ink sample swatch on white paper, showcasing its rich pigment and shading with The Desk Bandit watermark faintly visible.

Royal Red - 2ml

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$1.70

$1.36

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Robert Oster's Royal Red - 2ml ink sample swatch on white paper, showcasing its rich pigment and shading with The Desk Bandit watermark faintly visible.

Sale

Royal Red - 2ml

$1.70 $1.36

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Robert Oster Brandy - 2ml Ink Sample

Brandy - 2ml

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$1.70

$1.36

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Robert Oster Brandy - 2ml Ink Sample

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Brandy - 2ml

$1.70 $1.36

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Robert Oster Miami - 2ml Ink Sample

Miami - 2ml

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$1.70

$1.36

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Robert Oster Miami - 2ml Ink Sample

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Miami - 2ml

$1.70 $1.36

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Fizzy Lime (Shake 'N' Shimmy) - 2ml sample of Robert Oster fountain pen ink, featuring an abstract green swatch with silvery highlights on a white background.

Fizzy Lime (Shake 'N' Shimmy) - 2ml

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$2.00

$1.60

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Fizzy Lime (Shake 'N' Shimmy) - 2ml sample of Robert Oster fountain pen ink, featuring an abstract green swatch with silvery highlights on a white background.

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Sale

Fizzy Lime (Shake 'N' Shimmy) - 2ml

$2.00 $1.60

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Robert Oster Australian Opal Pink - 50ml Bottled Ink

Australian Opal Pink - 50ml

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$23.00

$18.40

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Robert Oster Australian Opal Pink - 50ml Bottled Ink

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Australian Opal Pink - 50ml

$23.00 $18.40

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Ever Green - 2ml ink sample, deep green with dark sheen, displayed as an abstract swatch on paper, from The Desk Bandit's fountain-pen ink collection.

Ever Green - 2ml

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$1.70

$1.36

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Ever Green - 2ml ink sample, deep green with dark sheen, displayed as an abstract swatch on paper, from The Desk Bandit's fountain-pen ink collection.

Sale

Ever Green - 2ml

$1.70 $1.36

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Robert Oster The Grinch (Shake 'N' Shimmy) - 2ml Ink Sample

The Grinch (Shake 'N' Shimmy) - 2ml

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$2.00

$1.60

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Robert Oster The Grinch (Shake 'N' Shimmy) - 2ml Ink Sample

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Sale

The Grinch (Shake 'N' Shimmy) - 2ml

$2.00 $1.60

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Robert Oster Napa - 2ml Ink Sample

Napa - 2ml

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$1.70

$1.36

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Robert Oster Napa - 2ml Ink Sample

/ 1 / 2

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Napa - 2ml

$1.70 $1.36

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GoGo - 50ml Robert Oster Signature ink bottle, vibrant blue with metallic sheen, eco-friendly, crafted in Australia for smooth fountain pen writing.

GoGo - 50ml

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$23.00

$18.40

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GoGo - 50ml Robert Oster Signature ink bottle, vibrant blue with metallic sheen, eco-friendly, crafted in Australia for smooth fountain pen writing.

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Sale

GoGo - 50ml

$23.00 $18.40

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Robert Oster Signature Ink - Plumb Nut 50ml: Cylindrical black bottle with a gold label, showcasing a unique dusty rose ink swatch in the upper right corner.

Plumb Nut - 50ml

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$23.00

$18.40

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Robert Oster Signature Ink - Plumb Nut 50ml: Cylindrical black bottle with a gold label, showcasing a unique dusty rose ink swatch in the upper right corner.

/ 1 / 2

Sale

Plumb Nut - 50ml

$23.00 $18.40

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Robert Oster Signature Ink - Australian Opal Blue, 50ml bottle, shown with a blue ink swatch, emphasizing sustainable, vibrant performance for fountain pen use.

Australian Opal Blue - 50ml

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$23.00

$18.40

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Robert Oster Signature Ink - Australian Opal Blue, 50ml bottle, shown with a blue ink swatch, emphasizing sustainable, vibrant performance for fountain pen use.

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Sale

Australian Opal Blue - 50ml

$23.00 $18.40

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Robert Oster Bishop to King - 50ml Bottled Ink

Bishop to King - 50ml

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$23.00

$18.40

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Robert Oster Bishop to King - 50ml Bottled Ink

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Bishop to King - 50ml

$23.00 $18.40

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Robert Oster Khakhi - 50ml ink bottle with black cap and gold seal, featuring a grayish base swatch with warm gold sheen.

Khakhi - 50ml

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$23.00

$18.40

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Robert Oster Khakhi - 50ml ink bottle with black cap and gold seal, featuring a grayish base swatch with warm gold sheen.

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Sale

Khakhi - 50ml

$23.00 $18.40

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Smokescreen - 50ml bottle of Robert Oster Signature dye-based ink, featuring a circular swatch of its unique color, inspired by South Australia's wine regions.

Smokescreen - 50ml

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$23.00

$18.40

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Smokescreen - 50ml bottle of Robert Oster Signature dye-based ink, featuring a circular swatch of its unique color, inspired by South Australia's wine regions.

Sale

Smokescreen - 50ml

$23.00 $18.40

More Details →

Robert Oster “Signature” fountain-pen ink, Great Southern Ocean - 50ml, in a black glass bottle with gold label, ribbed cap, and blue-gray ink swatch.

Great Southern Ocean - 50ml

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$23.00

$18.40

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Robert Oster “Signature” fountain-pen ink, Great Southern Ocean - 50ml, in a black glass bottle with gold label, ribbed cap, and blue-gray ink swatch.

/ 1 / 2

Sale

Great Southern Ocean - 50ml

$23.00 $18.40

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Frankly Blue - 2ml ink sample, showcasing dark-blue swatch with watery edges on white paper, featuring THE DESK BANDIT watermark at the bottom.

Frankly Blue - 2ml

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$1.70

$1.36

X

Frankly Blue - 2ml ink sample, showcasing dark-blue swatch with watery edges on white paper, featuring THE DESK BANDIT watermark at the bottom.

Sale

Frankly Blue - 2ml

$1.70 $1.36

More Details →

Robert Oster Signature Ink Sinner's Heart, 50ml fountain pen ink, showcases a deep burgundy watercolor-like texture, emphasizing sustainable Australian craftsmanship and vibrant writing expression.

Sinner's Heart - 2ml

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$1.70

$1.36

X

Robert Oster Signature Ink Sinner's Heart, 50ml fountain pen ink, showcases a deep burgundy watercolor-like texture, emphasizing sustainable Australian craftsmanship and vibrant writing expression.

/ 1 / 2

Sale

Sinner's Heart - 2ml

$1.70 $1.36

More Details →

Robert Oster Signature fountain-pen ink in Motor Oil, 50ml bottle, features a swatch displaying its unique shade inspired by South Australian wine regions.

Motor Oil - 50ml

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$23.00

$18.40

X

Robert Oster Signature fountain-pen ink in Motor Oil, 50ml bottle, features a swatch displaying its unique shade inspired by South Australian wine regions.

Sale

Motor Oil - 50ml

$23.00 $18.40

More Details →

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

X

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.

/ 1 / 2

Sale

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.

/ 1 / 2

Sale

Bondi Blue - 50ml

$23.00 $18.40

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Robert Oster Blue Martini - 2ml Ink Sample

Blue Martini - 2ml

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$1.70

$1.36

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Robert Oster Blue Martini - 2ml Ink Sample

/ 1 / 2

Sale

Blue Martini - 2ml

$1.70 $1.36

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Robert Oster Ten Dollar Gold - 2ml Ink Sample

Ten Dollar Gold - 2ml

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$1.70

$1.36

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Robert Oster Ten Dollar Gold - 2ml Ink Sample

/ 1 / 2

Sale

Ten Dollar Gold - 2ml

$1.70 $1.36

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Robert Oster Muddy Dragon - 2ml Ink Sample

Muddy Dragon - 2ml

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$1.70

$1.36

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Robert Oster Muddy Dragon - 2ml Ink Sample

/ 1 / 2

Sale

Muddy Dragon - 2ml

$1.70 $1.36

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Robert Oster Muddy Water - 2ml Ink Sample

Muddy Water - 2ml

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$1.70

$1.36

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Robert Oster Muddy Water - 2ml Ink Sample

/ 1 / 2

Sale

Muddy Water - 2ml

$1.70 $1.36

More Details →

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

X

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

/ 1 / 2

Sale

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.

/ 1 / 2

Sale

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.

/ 1 / 2

Sale

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

X

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

/ 1 / 2

Sale

Sublime - 50ml

$23.00 $18.40

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Robert Oster Gummy Shark fountain pen ink swatch, showcasing a mottled purple texture. A vibrant, eco-friendly ink, reflecting Australia's landscapes, in a 50ml bottle.

Gummy Shark - 2ml

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$1.70

$1.36

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Robert Oster Gummy Shark fountain pen ink swatch, showcasing a mottled purple texture. A vibrant, eco-friendly ink, reflecting Australia's landscapes, in a 50ml bottle.

/ 1 / 2

Sale

Gummy Shark - 2ml

$1.70 $1.36

More Details →

Robert Oster Water (Shake 'N' Shimmy) - 2ml Ink Sample

Water (Shake 'N' Shimmy) - 2ml

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$2.00

$1.60

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Robert Oster Water (Shake 'N' Shimmy) - 2ml Ink Sample

/ 1 / 2

Sale

Water (Shake 'N' Shimmy) - 2ml

$2.00 $1.60

More Details →

Robert Oster Candied Mint (Shake 'N' Shimmy) - 2ml Ink Sample

Candied Mint (Shake 'N' Shimmy) - 2ml

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$2.00

$1.60

X

Robert Oster Candied Mint (Shake 'N' Shimmy) - 2ml Ink Sample

/ 1 / 2

Sale

Candied Mint (Shake 'N' Shimmy) - 2ml

$2.00 $1.60

More Details →

Peach - 50ml Robert Oster Signature fountain-pen ink bottle with a bright, warm orange swatch circle, inspired by South Australia's wine regions.

Peach - 50ml

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$23.00

$18.40

X

Peach - 50ml Robert Oster Signature fountain-pen ink bottle with a bright, warm orange swatch circle, inspired by South Australia's wine regions.

/ 1 / 2

Sold Out

Peach - 50ml

$23.00 $18.40

This product is sold out

More Details →

Robert Oster Black is Black (50ml) Bottled Ink

Black is Black (50ml)

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$23.00

$18.40

X

Robert Oster Black is Black (50ml) Bottled Ink

/ 1 / 2

Sold Out

Black is Black (50ml)

$23.00 $18.40

This product is sold out

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