Joseph Isaac Gutnick (Diamond Joe) (born 1952) (Hebrew: יוסף יצחק הכהן גוטניק) is an Australian businessman and mining industry entrepreneur. He is also an ordained rabbi and is well known for his philanthropy in the Jewish world.
Among Gutnick's business holdings:
- Legend International Holdings. A mining company focused on phosphate exploration in Queensland, Australia. Gutnick is the President and CEO.
- Centaur mining went into receivership during 2001. Gutnick was the President and CEO.
- Top End Minerals. Executive Chairman. CEO.
- Quantum Resources Ltd. Chairman. Managing Director.
After almost having been ruined by the 1987 stock market crash, Gutnick was advised by Rabbi Menachem Schneerson to go back to the Australian desert and search for "gold and diamonds". He was responsible for overseeing the discovery of the Plutonic gold deposit, as well as the discovery, development and operation of the Bronzewing and Jundee gold mines in Australia. Gutnick also was a director of the World Gold Council and was awarded the inaugural Diggers Award at the 1997 Diggers and Dealers Industry Awards.
In 1991, his company, Great Central Mines, paid A$115 million to prospector Mark Creasy for the Bronzewing gold deposit. In 1999, Gutnick along with partner Robert Champion de Crespigny was found to have illegally structured a takeover of Great Central Mining. Gutnick was ordered to return $28.5 million to investors. On 5 April 2000, Joseph Gutnick, Robert Champion de Crespigny and Ian Gould resigned as directors of Great Central Mining.
In January 2014 it was announced that Blackham Resources, of which Gutnick is the chairman, had acquired the Wiluna Gold Mine, a mine Great Central Mines, under his leadership, held from 1997 to 2000. The mine was purchased from APEX Minerals, a company in receivership since June 2013, whose chairman at the time was Eduard Eshuys. Coincidentally, Eshuys was also in charge of the drilling program that discovered Plutonic for Gutnick. Gutnick had become chairman of Blackham on 4 February 2013 when his private company, Great Central Gold, invested A$13.32 million in Blackham.
Gutnick's father, Rabbi Shneur Chaim HaKohen Gutnick, was born in Zolotonosha, Ukraine, in 1921. He studied at the Telshe yeshiva in Lithuania until 1940 when the country was annexed by the Soviet Union and, via the far east, came to Cairns, Australia in 1941. After serving in the Australian Army until 1944 Gutnick married Rose Chester in 1945 and the couple had six children together, two daughters and four sons, Channah, Peninah, Mordechai, Moshe, Avraham and Joseph. Joseph Gutnick was born in 1953. His father died in 2003 after an influential life in the Australian Jewish community, having become president of the Rabbinical Council of Victoria in 1967.
Gutnick now lives in Singapore with his wife, a daughter of textile maker Max New, whom he married in 1974; they have 11 children. He studied for rabbinic ordination in Brooklyn, New York and ran a religious girls' seminary in Melbourne. His brother, Mordechai Gutnick, is a prominent Orthodox Jewish rabbi in Australia.
Gutnick is an Orthodox Jew and a member of the Chabad-Lubavitch Hasidic movement. According to Gutnick, in 1988, Rabbi Menachem Mendel Schneerson told him exactly where to mine for gold in Western Australia.
Gutnick v Dow Jones
Gutnick sued Dow Jones and Company for defamation regarding an article published about him in Barron's Online in the year 2000. It was one of the first international legal cases involving defamation on the internet. The case was highly controversial and the subject of much commentary from legal analysts. The case was appealed by the author, William Alpert, to the UN under the right of direct petition for individuals. With the prospect of that appeal, prepared by Geoffrey Robertson QC, Tim Robertson SC, London based Human Rights lawyer Mark Stephens (solicitor) and Sydney based lawyer Paul Reidy, the case was settled on 15 November 2004. Dow Jones settled the case, agreeing to pay Gutnick some of his legal fees. 
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- "Forum Awards". http://diggersndealers.com.au. Retrieved 16 June 2014.
- Bronzewing gold mine is flying again mineweb.com, published: 18 October 2007, accessed: 15 December 2009
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- BLKConsolidation of Wiluna Gold Belt, Plant & Infrastructure ASX announcement, published: 20 January 2013, accessed: 3 February 2014
- Troubled Wiluna gold returns to Gutnick The Australian, published: 21 January 2014, accessed: 3 February 2014
- Blackham agrees $13m funding deal with Great Central ASX announcement, published: 4 February 2013, accessed: 3 February 2014
- Rabbi Shneur Chaim HaKohen Gutnick chabadofthegardens.com, accessed: 3 February 2014
- Long, Stephen (5 June 2003). "The World Today – Profile of Joseph Gutnick". Retrieved 10 February 2010.
- Messenger News – Gutnick Throws Massada a Lifeline
- Sporting Pulse – Complex Sprouting, Legend Park
- Dow Jones and Company Inc v Gutnick (2002) HCA 56; 210 CLR 575; 194 ALR 433; 77 ALJR 255, (Australian High Court Opinion) via Australasian Legal Information Institute, accessed 2010 5 31
- Internet Makes Dow Jones Open to Suit in Australia, Felicity Barringer, nytimes.com, 2002 Dec 11, accessed 2010 5 31
- Landmark Ruling In Internet Case, Dan Collins, cbsnews.com, 2002 12 10, accessed 2010 5 31
- Webb, Christopher (2003-04-17). "Gutnick grist for the learned friends' mill– Media, News". Pacific Rim Law Journal. Retrieved 2013-08-04.
- "Dow Jones settles Gutnick action". ABC News Online (Australian Broadcasting Corporation). 12 November 2004. Retrieved 2009-03-02.
- Garnett, Nathan (2004-12-01). "DOW JONES & CO. v. GUTNICK: WILL AUSTRALIA'S LONG JURISDICTIONAL REACH CHILL INTERNET SPEECH WORLD-WIDE?– Media, Law". Pacific Rim Law Journal. Retrieved 2013-08-04.
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