Because several people requested a story about this, here you go.
You could still hear the music and see fireworks from yards away. Jasper and Thadius left the festival in the little chinese town behind as they walked back to the warp pad. Jasper's cape billowed in the chilly wind, but for once, Thadius didn't seem to mind the cold. There was a gleam of joy in his brown eyes and a skip in his step as they walked. "That was incredible!" he exclaimed, "The food was amazing and the music was absolutely beautiful!" Jasper grinned at the small humans excitement, though her face was still hidden by her hood. "I wish we could have stayed longer," he said, looking back in the direction of the village.
"it was getting dull," Jasper reasoned with a shrug.
"You probably would have enjoyed it more if you joined in on the dancing," Thadius argued.
"Gems don't really dance for recreation," Jasper stated.
This caused Thadius to burst out laughing. "Not for recreation?!" he repeated in disbelief, "Is there any other reason to dance?"
Jasper rolled her eyes at him. "Gems dance to fuse," she explained.
"Fuse?" Thadius echoed in confusion.
"When gems are in sync, they can combine themselves into one, more powerful being," she said.
"Is it permanent?" he asked.
"No," she explained, "Gems in a fusion can unfuse at anytime."
"It sounds like something quite beautiful," he said, "being so intune with another that you can become a single person..."
"I guess..." Jasper responded, not really interested in the conversation.
There was a moment of silence between them before Thadius spoke up again. "...Can humans fuse with gems?" he asked.
Jasper stopped and raised an eyebrow at him. A wide grin crossed her face before she burst out laughing. "Of course not!" she said, "If humans can't fuse with humans, then they certainly can't fuse with gems."
"Why not?" he asked.
"Well first off," she said, "You need to have a body made of light. Last time I checked, you humans are made of meat." She poked him in the arm for emphasis.
Thadius rubbed his arm with a grin. A thoughtful frown formed on his face. "Then why don't you dance with humans then?" he asked, "If there's no worry about fusing with one, then why not?"
Jasper stopped walking and thought for a second. "I guess I just never thought to," she responded, "Why? Are you asking me to dance?"
"Well that wasn't my original intention," he said rubbing the back of his head awkwardly, "but it would be nice if we could..."
Jasper let out a snort of amusement. "Very well," she said, "but I lead." Jasper then grabbed his hand and guided him into position. They could still hear the music coming from the town. One of her large hands covered his left shoulder while the other held his right hand as she pulled him along to the tempo. He tripped over himself a few times, but soon got a hang of it.
'This isn't too horrible,' Jasper thought to herself as the moved to the rhythm. They began moving faster and faster. Unaware of a soft light surrounding them.
The light became brighter as the song ended, and Jasper finally noticed it as it engulfed them both. Her eyes wide in shock before disappearing in the blinding light. The light began to grow and stretch until it became a tall, lithe form with broad shoulders. Four arms extended from its body, the smaller pair extending from just below the figure's rib cage. The light dissipated, revealing the figures pattern of orange skin with pale stripes. It's clothing was warm in color and ornate in style. A long, regal-looking cape extended down its back and a wreath sat on its head. Its four eyes open to reveal two orange and two brown. Messy dirty blonde hair fell to its shoulders.
The figure looked itself over with wide eyes, its features switching from shocked, to excited, to panicked, and then to disturbed. "We..." It spoke in a quiet, deep-yet-feminine voice, " we fused..."
The fusion began to laugh uncontrollably. "This!" it said, "This is incredible! And strange! I feel like I'm in some kind of giant hug! Everything around me-us- is so tiny! Look! I-we are taller than that tree!"
The fusion's face changed from elation to confusion. "H-how?!" it shrieked to seemingly no one, "This should be impossible! Humans and gems can't-...I'm mean they're not supposed to...Grrr this shouldn't be able to exist."
"Somethings in life don't make sense," it replied to itself with a shrug.
"Yes but-" the being argued back,"RRRRRG!" The giant figure punched a near by tree, causing it to break in half. The arms gripped each other. Jasper didn't know what to make of this situation. Everything told her that this shouldn't have happened. It just felt wrong. She didn't feel like a gem anymore. There was a heart now thudding in their chest that she didn't like. It kept beating and beating and it was getting on her nerves. The more angry she got, the faster it beat. Also there was some kind of painful sensation all over their skin. It was like nothing she had ever felt before. It stung all over. Had Thadius been injured? The figure looked itself over desperately for any injuries.
"Jasper, what's wrong?" Thadius spoke through the fusion, causing it to stop and look up.
"Why are we in pain," she almost demanded.
"It's cold," Thadius responded.
"So?" she almost spat, "What does cold have to..." A look of realization crossed the fusion's face. Jasper didn't like this. She wanted out as soon as possible. The fusion began to glow as the two being that made it up split apart. They both toppled over into the snow. Jasper quickly shot up. The stinging was gone. She looked herself over. Relief flooded through her as she noticed that she was back to normal. There was no longer a frantically pumping heart in her chest. She was back to being just a gem. She had hated being part of that fusion. Despite how large it was, she felt so...fragile. She felt like at any moment she could just stop existing. For the first time in a long time she honestly feared death. Was that what humans always felt like?
"That was amazing!" Thadius exclaimed, "I felt like a giant! Like nothing could get in our way! I could see everything for miles around!" He turned to Jasper to see she was still kneeling on the ground, a very distant look on her face. "Jasper," he said walking over to her and putting a hand on her shoulder, "Jasper are you alright?"
She suddenly got up not making eye contact with him. "We are never doing that again," she said, walking away. Thadius followed after her, worry written on his face.
They walked a long silence between them as the walked. "I'm sorry," Thadius finally broke the silence, "I didn't know that would happen. Can...Can you forgive me?"
Jasper suddenly stopped and turned towards him. She stared down at him for a moment before taking off her fur cape and wrapping it around his shoulders. "Come on," she said, "Let's find someplace warmer."