The answer to this question depends on what you are comparing: weight or volume.
- By weight: Gold is generally more costly than diamonds. This is because gold is a denser metal than diamond, meaning it weighs more for the same volume.
- By volume: Diamonds are generally more costly than gold. This is because diamonds are extremely rare and highly sought-after, making their price per unit volume much higher than that of gold.
Example:
- A one-gram gold coin might cost around $50, while a one-gram diamond could cost several hundred dollars or even thousands.
- However, a one-carat diamond (which weighs 0.2 grams) might cost more than a 10-gram gold bar.
It's important to remember that the price of both gold and diamonds fluctuates based on factors like market demand, supply, and global economic conditions.