- Gulf of Oman (Wikipedia)
The Gulf of Oman or Sea of Oman (Arabic: خليج عمان khalīj ʿumān; Persian: دریای عمان daryâ-ye omân), also known as Gulf of Makran or Sea of Makran (Arabic: خلیج مکران khalīj makrān; Persian: دریای مکران daryâ-ye makrān), is a gulf in the Indian Ocean that connects the Arabian Sea with the Strait of Hormuz, which then runs to the Persian Gulf. It borders Iran and Pakistan on the north, Oman on the south, and the United Arab Emirates on the west.
- Onyx (Wikipedia)
Onyx is the parallel-banded variety of chalcedony, a silicate mineral. Agate and onyx are both varieties of layered chalcedony that differ only in the form of the bands. Onyx has parallel bands, while agate has curved bands. The colors of its bands range from black to almost every color. Specimens of onyx commonly contain bands of black or white or both. Onyx, as a descriptive term, has also been applied to parallel-banded varieties of alabaster, marble, calcite, obsidian, and opal, and misleadingly to materials with contorted banding, such as “cave onyx” and “Mexican onyx”.