DiscussMormonism.com

Some gender differences are evident, however, in themes for the two groups.
The new Young Women theme, introduced at last month’s General Conference, uses “Heavenly Parents” as a term for deity (since Mormonism teaches of a Father and Mother in Heaven), while the Young Men theme mentions only “God.”
The girls promise to “strengthen my home and family, make and keep sacred covenants, and receive the ordinances and blessings of the holy temple,” while the boys say they will “use his [God’s] priesthood to serve others” and “prepare to become a diligent missionary, loyal husband, and loving father by being a true disciple of Jesus Christ.”

To signify belonging, all 8-year-olds will receive a picture of the temple and a ring with a CTR (choose the right) shield surrounding a temple symbol.
At 12, boys will get a ring that points them to the temple, and girls will get a medallion and gemstone necklace. Both groups will receive temple recommend holders.
At 18, young men will receive a vial for consecrated oil to use with priesthood blessings, given only by males, and young women will get a pendant to add to their necklaces.