Joseph Gutnick

On 8 July 2016 Gutnick declared himself bankrupt with debts of over $275 million.

In January 2014 it was announced that Blackham Resources, of which Gutnick is the chairman, had acquired the Wiluna Gold Mine, a mine which 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 sued Dow Jones and Company in the Supreme Court of Victoria 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 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.

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. Gutnick appealed the decision and the decision was vacated for lack of jurisdiction. Gutnick expressed confidence that he could have won on the merits too, had that been necessary. On 5 April 2000, Joseph Gutnick, Robert Champion de Crespigny and Ian Gould resigned as directors of Great Central Mining.

Gutnick became close with Israeli Prime Minister Benjamin Netanyahu in his role as the Rebbe's Special Emissary for the Integrity of the Land of Israel. In the 1990s, Gutnick spent millions of dollars campaigning for Netanyahu and against the Labour Party in Israel's elections to try to prevent the Israeli Government giving up land, which the Rebbe said would never help achieve peace.

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.

Gutnick lives in Melbourne 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. Gutnick is an Orthodox Jew, and a member of the Chabad-Lubavitch Hasidic movement. According to Gutnick, in 1988, Rabbi Menachem Mendel Schneerson, known as the Rebbe, told him to mine for gold in Australia's desert. His brother, Mordechai Gutnick, is a prominent Orthodox rabbi in Australia.

Joseph Isaac "Diamond Joe" Gutnick (born June 1952; Hebrew: יוסף יצחק הכהן גוטניק ‎) is an Australian businessman and mining industry entrepreneur. He is also an ordained Orthodox rabbi, and is well known for his philanthropy in the Jewish world. He declared bankruptcy in July 2016.

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 1952. 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.