When it comes to naming things, there are always a few words that can trip us up. In this case, "emerald" is one of them. While some people might think of the classic green gemstone, others might be confused by the Japanese word for it. Luckily, we’re here to help.

To say "emerald" in Japanese, you can use the word 翠綠 (mashiro) or 翵習 (yawaruchi).

Both words are commonly used and have similar meanings.

The word 翠綠 (mashiro) is more often used to refer to the green color of emeralds or other gemstones. It’s a popular choice for people who want to be specific about the shade they’re talking about.

On the other hand, the word 翵習 (yawaruchi) is more commonly used to refer to the idea of "learning" or "experience." It’s often used in a metaphorical sense, such as "the experience of learning new things is like growing an emerald."

In conclusion, both 翠綠 (mashiro) and 翵習 (yawaruchi) are good options for saying "emerald" in Japanese. It all depends on the context of your conversation and what you’re trying to convey.