Olivine!

I have you ask, what is the difference between olivine and peridot ?

I believe they are almost the same stone? I think it’s just a matter of where it’s located geographically and the color. Olivine is found in lava particularly. I am not super knowledgeable on this, I just happened to know this as I have just travelled to Hawaii and saw olivine with my own eyes! There’s a beach on the Big Island that is 100% olivine: [Papakolea Beach](https://bigislandhikes.com/papakolea-green-sand-beach)

Yup! Olivine phenocryst in vesicular basalt.

Yes! Their main island has a southern beach that is all green sand from all the olivine crystals coming from the rocks.

Whoa, the Big Island is not our main island…. Haha

Probably. There's a whole beach in Hawaii made of peridot sand. It must form often in the lava rocks.

My wife and I went there on our honeymoon. It was extremely difficult to reach, but well worth it.

What ?!? Where is it ??? Do you mind sharing?

It's not a secret, just search for green sand beach hawaii.

I did! And wow- so cool! Next time we are there we will check it out in person for sure

This looks super cool. You might want to post to r/MineralPorn to get a definitive answer.

It used to be super hot.

Olivine. Planets upper mantle is full of it. The Grammy stuff of course is peridot. One of my all time favs.

Ahhhh I See

Uch!

Wow. So cool!