You can check out above graph to see how the market cap of OpalCoin has changed over time. The market cap value depends on the value of OpalCoin on that particular day and number of OpalCoin in supply at that day.

How is OpalCoin Market Cap calculated?

The OpalCoin Market cap is calculated using a simple formula. You can find it below:

OpalCoin Market Capitalization in USD = Number of OPAL in supply X Price of one OpalCoin in USD

Since the price of OpalCoin is highly volatile you can see the market cap going up and down a lot. Sometimes price and market cap are not linear to each other due to increase in the supply of coins in the market and stable or decrease in the price of the coin. So you can say that it's not simple to predict the market cap of OpalCoin or predict the price of OpalCoin.