Step into the heart of the Whirlpool Galaxy with Extragalactic—a unique and breathtaking coin that fuses artistry, astronomy, and craftsmanship. Each coin is hand-set with four dazzling natural pink, golden, and white diamonds, each millions of years old, representing radiant stars within the Whirlpool Galaxy, and incorporates finishes that bring the colours of the galaxy to life.

Key features:

99.99% pure silver

Patina and coloured surface treatment

Handset with approx. 0.33ct of Argyle pink, golden and white diamonds

Argyle Pink diamond appro 0.03 Cts

Argyle Golden Diamond appro 0.10 Cts

Argyle White Diamonds appro 0.,20 Cts

PS Argyle mine in Australia is now closed making these collectors item

Australian legal tender

Argyle Pink Diamonds Select AtelierTM

Limited Mintage 1,000

Whirlpool Galaxy

Extragalactic astronomy is the study of objects and phenomena beyond the Milky Way. Among the most observed deep-space objects is the Whirlpool Galaxy (aka Messier 51). Located 31 million light-years away in the constellation Canes Venatici, it offers a face-on view enabling astronomers to study its magnificent spiral structure comprising huge numbers of stars. Within its centre and along its swirling arms, dense clouds of gas and dust are being compressed to create clusters of new stars. Not only is the Whirlpool Galaxy a captivating sight, but it also offers researchers an unprecedented opportunity to investigate star-forming processes.

Extragalactic design

This uniquely patinaed coin portrays a coloured representation of the Whirlpool Galaxy, encircled by the inscriptions ‘EXTRAGALACTIC’, ‘23.58 KPC | 31 MLY’ (its diameter in kiloparsecs and distance from Earth in megalight-years), and its location on the celestial sphere at coordinates ‘RA 13h 29m 53s | Dec +47° 11′ 43’. The patina evokes the mystery of deep space while the spectrum of applied colours represents the stages of star formation: red of the infrared glow of hydrogen-rich star-forming regions, blue of the vibrant young stars, and yellow of the ancient stars. Representing stars within the Galaxy’s arms, the reverse is hand-set with a pink, golden, and two white diamonds. Also included are the designer’s initials ‘NM’, The Perth Mint’s ‘P’ mintmark, and 2025 year-date.

04 Extragalactic 2025 5oz Silver Patina Coloured Coin in case HighRes

Technical information

This coin have been individually treated to give it a pleasing patina, a surface look normally associated with objects that have grown more beautiful over time. As a result of this treatment, the appearance of each coin in the mintage may vary.

Presentation packaging

Accompanied by a numbered certificate of authenticity, the coin comes packaged in a circular wooden collector case, elegantly embossed with the word 'EXTRAGALACTIC' on the lid. Inside, the coin is nestled in velvet-lined material with cosmic-inspired foiling for an added touch of sophistication.