The diamond is believed to have been mined in South India in the 13th century and passed through rulers until it was taken by the British Empire in its colonial rule over India.
HiPP, which recalled some of its baby food jars in Austria, Slovakia and the Czech Republic after the case came to light, said it was "greatly relieved" by the arrest.
Video released Friday by the IDF shows soldiers holding an Israeli flag and walking among the destruction of a soccer stadium in the Lebanese town of Bint Jbeil.
Officials gave the green light for the attempt to save the whale, after a debate about whether to let it die in peace or try to assist its return to the Atlantic Ocean.