Suggested by Flower Forest 23 (I am sorry I didn't get to this sooner. But I hope you like it.)

Blue, White, and Yellow are all in a relationship/married. Blue is pregnant with their gemling, and they help her give birth.

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Blue was sitting in her room, breathing heavily. She could feel their gemling coming. White gently ran her fingers through her hair, while Yellow held her hands.

Yellow sounded soft as she spoke. "You're doing wonderful, Blue. Just focus on breathing."

White gently patted her head. "Yes, my dear. Relax, focus on breathing. In a while our little diamond will be here."

A small nod came from Blue, her voice tired. "I am excited, in a way. I know she will be here soon."

Now she smiled at her wives. "I wonder who she will be like."

She rubbed her stomach. "Maybe she will be her own diamond."

Yellow diamond hummed slightly. "I'm sure she will be a great leader."

White nodded eagerly. "Oh, yes. A great new diamond. I'm sure she will be radiant."

Blue hummed softly. "So long as we are here to teach her, and adore her, I am sure she will be fine."

A sharp twinge went through Blue's body and she winced. She could tell that it was time.

Her eyes met both of her wives' for a few moments. "She's coming, it's time."

Yellow squeezed her hands, and White kissed her forehead.

White spoke first. "Ok, dear. Focus on your breathing, and be ready to push."

Now Blue nodded, and flinched as she felt another twinge of pain.

As the pain slowly grew, she tried to focus on her breathing, trying to keep it steady.

Her hands tightened on Yellow's. She closed her eyes, and her body tensed.

A whine of pain escaped her, and White hummed softly. "Excellent, you're doing good. Give another push if you can..."

Blue diamond was there for an hour. After heavy breathing, crying, and pushing, their gemling was here.

The small gem was pastel green, and her gem was on her chest. The diamond gemstone was facing downwards, like White's. It was darker than the rest of her body.

As Blue held her, she ran her fingers through her hair. Her hair was short, and slightly star-shaped, resembling White.

Yellow gently ran a finger over her cheek.

White watched her warmly. "She's beautiful."

The small gemling's eyes opened. Her eyes were a darker green then the rest of her body.

As the new gemling looked around at her mothers, her gem started to glow slightly.

A green energy radiated through the room, and all three diamonds were left feeling calm.

Blue hummed softly, and held the tiny gem to her chest. "She seems to have my ability. She can use it for good, then. I hope she stays happy."

Yellow kissed the small gem on the head. "I'm certain she will be."

White pulled both Blue, and Yellow close. "My lovely girls, I'm sure she will be a fine diamond. Today is a wonderful day."

All of their gems started to glow, and a feeling of joy spread through the room.

The tiny diamond yawned, and her eyes closed.

While she fell asleep, Blue felt tears of joy running from her eyes.

It really was a wonderful day.

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Tbh I love gemling/gem egg stories. So this was fun to write :)