Rin (リン, Rin?)  is Moldavite's Jewelpet partner, she is a green Parakeet  who symbolizes prosperity. She wears a pink bow on the back of her head and a necklace shaped like a yellow butterfly. Appearing in the first season, Rin always talks about business and economy and uses an abacus to calculate. She also speaks in a Kansai dialect and is prone to funny jokes. In Jewelpet Tinkle, she appeared alongside Moldavite, greeting the new students in Jewel Land, including Ruby. Her speeches ends with "rin". Her birthday is on November 23rd and her name is based on the Jewel Citrine.  (source: Wikipedia)

Rinko, a junior high school student, becomes a partner with Ruby, a rabbit Jewelpet, to find the Jewel Charms that were accidentally dropped from Jewel Land and got lost in the world of humans. Since Jewel Charms appear around people in trouble, Rinko and Ruby always get involved in helping them solve their problems. With help from their friends and a good-looking high-level goverment official, they use the magic of Jewelpets to overcome obstacles, and in each episode they find another missing Jewelpet. Meanwhile, Black Cat Diana manipulates a group of petty criminals as she plans something evil to Jewel Land, the homeland of the Jewelpets. (Source: AniDB)

In Jewel Land, Jewelpets, creatures who has the natural ability to use magic lived in harmony with the Witches, attending the School of Witchcraft and Wizardry to learn to use magic with their Jewel Eyes. However for Ruby, a white Japanese Hare whose magic sometimes fail, is appointed to go to the Human World to search for her partner. But when she used the card the magicians gave her, she was sent to the Human World by accident. In the Human World, A girl named Akari Sakura met her on the beach on her way to school. At first, Akari can't understand her due to her Jewel Land Language until Ruby took a special candy so she could speak and understand human language. As the day passes, Ruby knew about her problems and later apologized. A Jewel Charm appeared on Akari's hand and she realized it that she's chosen by Ruby to be her partner. After that, she decided to enter the Jewel Star Grand Prix, on the prize is that any wish that they wanted will be granted. Will she be the Next Jewel Star and her wish be granted in the end? Or I'll just end in one big disaster... 
(Source: Wikipedia)

The story of the new film is set in Sweetsland, a country next to Jewelland. Ruby and the other Jewelpets are celebrating the birthday of the princess with dancing. However, during the preparations for the birthday party, a mysterious object appears from the skies. In the object is a Sweetspet boy, whose identity is unknown. 
(Source: Anime News Network)