The forecast for Japan's import of worked but not set rubies, sapphires, and emeralds from 2024 to 2028 shows a gradual decline in market value from 67.925 million USD in 2024 to 66.008 million USD in 2028. When considering previous years, the actual data suggests a slight downward trend beginning before 2024, with a decrease from the recorded figure in 2023.

Year-on-year comparisons reveal a modest percentage decline in value each year. Over the five-year period, the compound annual growth rate (CAGR) represents a negative trend, indicating a consistent decrease in imports.

Future trends to watch for include:

Potential shifts in consumer preference towards alternative gemstones.
Market dynamics influenced by economic conditions, such as currency fluctuations and trade policies.
Technological advancements in synthetic gemstones affecting demand for natural stones.
Sustainability concerns impacting sourcing and trading of gemstones.