Is there a standardized English translation for "聖晶石"? It seems to be the currency in Fate/Grand Order, and Pixiv describes them as "servant summoning stones" (not a direct, from the kanji translation), but I don't see it described in English anywhere after a brief search.

It's Saint Quartz.

10x the fun for just 3.3x the price is a goddamn steal.

...Shame Aniplex never gives out such bargains.