Rainbow Dash finds a stone while out flying, but it explodes when she touches it. What was it and why did it explode?

Based on a prompt by OCisbestpony

We follow Red Dawn, a Canterlot Royal Guard and part of 48^th Regiment. Ranked as Sergeant, and unlike any others. He held a special permission from Princess Celestia herself to have the opportunity to live on a normal house, few hoofsteps near the Castle itself. And he had to choose a companion to live with him on the house.

Blue Wind, being a mare Pegasus and a long time friend of Red Dawn was chosen to accompany him.
And thus, his ordinary life began.

Note :
Constructive criticism is welcomed.
My attempt to write something better without a proof reader, hopefully fixing my Grammatical error because English rules are so dang annoying. Ugh, cheers anyway.

A dangerous artifact has broken containment and could start an end of the world scenario. Only Aaron Hock and his team stand in its way.

Jade Hardstone, an earth pony, must escape from the main war, and use her technological weapons to help her find the gemstone of gemstones.

This is an Eve Online MLP FiM crossover.

Rarity finds herself taken from her home world of Equestria. After she is killed, she wakes up as a Capsuleer. Given her own ship and thrust into the stars. She tries to get used to this strange new reality she has been thrust into, just so she can find a way to return home.

Hopefully without getting blown up too many times.

(Death is not the main focus of this story, but it happens. Tags may change as later chapters are written)

Cover art by AnnonyMouse (yours truly) https://e621.net/post/show/1602214/annonymouse-anus-blue_eyes-camel_toe-clothing-equi (Somewhat revealing, you have been warned.)

Special note, I tend to be logged into Eve Online while writing these chapters. I mean, why not have a source of information right at my fingertips. Don't ask for my character's name. It isn't Jafrak

This story is a sequel to EoH Evolution: Season 2

Things have been going great since Queen Chrysalis was defeated. The changelings who defected from their former leader now call Unity their home. Both sets of elements are enjoying their rest. And Burst Steam is throwing himself into his relationship with Celestia. It seems like our hero is living the dream he's had ever since he promised to give Nightmare Moon's story a happy ending. But the thing is? Her story isn't over.

A horrifying skeleton of a monster has haunted Twilight Sparkle. Unable to cope with the nightmarish beast, she looks for a way to solve the problem at any means.

She didn’t like cats.

She didn’t have a cat.

Nevertheless, there was a cat. One morning it was there, right on the edge of her front stoop.

Now in Chinese! Translation courtesy of hehelover
Now with a reading by AShadowOfCygnus!

To give herself a new perspective on plants, life, and plant life, Sunset Shimmer visits a local park to try and make sense of the world around her.

A humble addition to the Beanis Cinematic Universe

In the far future, after the devastating war with Queen Chrysalis and her changelings, and after Princess Flurry Heart was corrupted by King Sombra and assassinated Princess Twilight Sparkle, Moonlight Sterling, a descendant of Princess Twilight, goes on an adventure to gather the new Element Bearers and bring back the Crystal Empire and reform Princess Flurry, the only living alicorn left in Equestria.