To pursue a career in gems and jewelry, you should focus on subjects like chemistry, geology, and art/design in 12th grade. These provide a foundation for understanding gemstones, their properties, and jewelry creation. After 12th, consider courses in gemology, jewelry design, or metallurgy
. Institutes like GIA, IGI, or NIFT offer specialized training. Computer-aided design (CAD) skills are also valuable. A combination of science, creativity, and technical training can lead to careers in gemstone identification, jewelry design, or manufacturing.