Robert Oster Thunderstorm Signature Ink

Capture the drama of a stormy sky with Robert Oster Thunderstorm Ink, a premium fountain pen ink featuring a deep grey-blue hue reminiscent of rolling clouds and heavy rains. With excellent shading and smooth flow, it’s perfect for journaling, sketching, and professional writing that demands a touch of atmospheric elegance.

Packaged in a 50ml recyclable PET bottle, this ink combines sustainable craftsmanship with the reliable performance Robert Oster is known for.

Key Features:

• 50ml fountain pen ink in eco-conscious PET packaging

• Dark, stormy grey-blue tone with beautiful shading

• Smooth, consistent ink flow – safe for all fountain pens

• Ideal for creative writing, artwork, and formal documents

• Made in Australia using environmentally friendly practices

• A moody, sophisticated shade for any fountain pen ink collection

Bring the power and beauty of the storm to your pages with Robert Oster Thunderstorm Signature Ink—crafted for writers who love bold, evocative colors.