Kasos Kasos Kasos (; , ), also Casos, is a Greek island municipality in the Dodecanese. It is the southernmost island in the Aegean Sea, and is part of the Karpathos regional unit. , its population was 1084. The island is known in Italian as "Caso". Kasos lies southwest of Karpathos, between this island and Crete. Adjacent to the island is the Strait of Kasos, through which some of the Modified Atlantic Water enters the Sea of Crete. Its shape is elliptic and resembles that of Rhodes. The main island has a surface of , and it is long and wide.
Island of the Jewel Island of the Jewel The Island of the Jewel () or Island of Sapphires () was a semi-legendary island in medieval Arabic cartography, said to lie in the Sea of Darkness near the equator, forming the eastern limit of the inhabited world. The island does not appear in any surviving manuscript of Ptolemy's "Geography" nor other Greek geographers. Instead, it is first attested in the Ptolemaic-influenced "Book of the Description of the Earth" compiled by al-Khwārizmī around 833. Ptolemy's map ended at 180° E. of the Fortunate Isles without being able to explain what might lay on the imagined eastern