How ornaments work?

Hi, i wanted to ask about how do really critical rate ornaments, for example 1000/10k, work. if i usually make 20k damage so after i start to use 1000/10k ornament i will do 22k dmg (+1k extra dmg for each 10k critical)? . Or these ornaments are only for higher rate to do critical hit? Thanks

 

It's only to increase your possibility to land a critical hit. Of course, if you have 10k/10k, your critical hit is 100%.

 

Thanks , so for pve and pvp 10k/10k critical is enough to have?