The ink I chose for June the second, I liked it so much I refilled the pen.
The Great Barrier Reef is composed of nearly 3000 individual reefs and 900 islands, it stretches for more than 2000km in the coral sea off the coast of Queensland.  Contrary to the urban legend that the Great wall of China can be seen from outer space the Great Barrier can be seen, it is the worlds largest structure made by living organisms.

When non Sydney-siders think about Sydney Harbour they usually assume the term refers to the part of the waterway where one can see the Sydney harbour Bridge and the Opera House.  It is so much more.  The natural harbour of Sydney is Port Jackson which is comprised of the waters of Sydney Harbour, Middle Harbour, North harbour, Darling Harbour and the Lane Cove and Parramatta rivers.  The harbour is an inlet of the Tasman sea and the location of the first European settlement on the mainland.

Blackstone inks are an Australian ink brand that seems to have been looked over as the fountain pen world was taken by storm by Robert Oster inks, also from Australia. It is shame really because though they do not carry the same range of colours they appear to be good quality inks and are very affordable.
I came across these inks on one of many searches for new brands and it did take awhile before I purchased any as I was waiting for Blackstone pen flush to come back into stock so I could buy some at the same time. I ordered the inks from Justwrite, which is where the inks are made. The blackstone web site list four places in Australia that retail the inks and a number of locations in Europe and the USA. The inks retails for AUD$8 for 30ml which equates to 26.6c a ml (18.5c US and much the same in NZ money) – quite cheap and remaining so even with postage added.