The 1834 Tiara of Pope Gregory XVI was a papal tiara

Papal Tiara

The Papal Tiara, also known incorrectly as the Triple Tiara, or in Latin as the Triregnum, in Italian as the Triregno and as the Trirègne in French, is the three-tiered jewelled papal crown, supposedly of Byzantine and Persian origin, that is a prominent symbol of the papacy...

 given to Pope Gregory XVI

Pope Gregory XVI

Pope Gregory XVI , born Bartolomeo Alberto Cappellari, named Mauro as a member of the religious order of the Camaldolese, was Pope of the Catholic Church from 1831 to 1846...

. It was the first of three tiaras received or commissioned by Pope Gregory during his reign.

The tiara was unique up to the nature of its decoration, which involved three crowns containing outstanding large clover

Clover

Clover , or trefoil, is a genus of about 300 species of plants in the leguminous pea family Fabaceae. The genus has a cosmopolitan distribution; the highest diversity is found in the temperate Northern Hemisphere, but many species also occur in South America and Africa, including at high altitudes...

 shaped in gold

Gold

Gold is a chemical element with the symbol Au and an atomic number of 79. Gold is a dense, soft, shiny, malleable and ductile metal. Pure gold has a bright yellow color and luster traditionally considered attractive, which it maintains without oxidizing in air or water. Chemically, gold is a...

, laid with heavy jewel

Gemstone

A gemstone or gem is a piece of mineral, which, in cut and polished form, is used to make jewelry or other adornments...

s.

The new style of design was copied in the later Palatine Tiara

Palatine Tiara

The Palatine Tiara is the most widely used Papal Tiara in the possession of the Vatican. It was donated to Pope Pius IX in 1877 by the Holy See's Palatine Guard to commemorate his jubilee as a bishop...

 given to Gregory's successor, Pope Pius IX

Pope Pius IX

Blessed Pope Pius IX , born Giovanni Maria Mastai-Ferretti, was the longest-reigning elected Pope in the history of the Catholic Church, serving from 16 June 1846 until his death, a period of nearly 32 years. During his pontificate, he convened the First Vatican Council in 1869, which decreed papal...

 by the Vatican's Palatine Guard

Palatine Guard

The Palatine Guard was a military unit of the Vatican. It was formed in 1850 by Pope Pius IX, who ordered that the two militia units of the Papal States be amalgamated...

 in 1877.

Gregory's tiara was one of the most worn in the papal collection. Pius IX, Pius X

Pope Pius X

Pope Saint Pius X , born Giuseppe Melchiorre Sarto, was the 257th Pope of the Catholic Church, serving from 1903 to 1914. He was the first pope since Pope Pius V to be canonized. Pius X rejected modernist interpretations of Catholic doctrine, promoting traditional devotional practices and orthodox...

 and Pope Pius XII

Pope Pius XII

The Venerable Pope Pius XII , born Eugenio Maria Giuseppe Giovanni Pacelli , reigned as Pope, head of the Catholic Church and sovereign of Vatican City State, from 2 March 1939 until his death in 1958....

 all wore the tiara. It is unknown if Pope John XXIII

Pope John XXIII

-Papal election:Following the death of Pope Pius XII in 1958, Roncalli was elected Pope, to his great surprise. He had even arrived in the Vatican with a return train ticket to Venice. Many had considered Giovanni Battista Montini, Archbishop of Milan, a possible candidate, but, although archbishop...

 ever wore it.

Popes ceased to wear papal tiaras in 1963 though the usage has not been abolished. Future popes could decide to wear papal tiaras, including the Tiara of Pope Gregory XVI, in the future.