spinel

"The jewelry box was filled with colorful gemstones like rubies, emeralds, and sapphires. "

"The teacher's encouraging words confirmed the student's resolve to study harder for the exam. "

"It is not necessarily true that children get their morals from their parents."

"He does not even possess a working telephone."

"The scientist used magnesium for the demonstration in the science lab. "

"The birds had built an amazing structure out of sticks and various discarded items."

"This week's math test is featuring fractions, so make sure you study them carefully. "

"The jeweler carefully inspected each crystalline before setting it in the ring. "

"The kitchen foil is made of thin aluminium. "

"The scientist studied the effects of different types of soil on plant growth. "

"Hey, beautiful!"

"The jeweler purchased bars of unwrought silver directly from the mine. "