What types of gems are the most expensive?
user
The four most expensive gems are the blue gem star ruby, a pink or red hibiscus jade, the D flawless ideal cut Kawakashi aquamarine, and a large oval diamond.
assistant
What types of gems are the most expensive?
user
Diamonds, rubies, sapphires, emeralds, and other colorful gems like tanzanite and amethyst are among the most expensive.
assistant
What types of gems are the most expensive?