Parties at Genius Gems Millburn, NJ

Celebrate your birthday at Genius Gems Millburn, for your best birthday yet!

Our talented team will lead you and your guests in a 1.5 hour celebration that features the best that Genius Gems has to offer. Parties are for ages 5/6 and older only. In order to ensure a limited number of people, all parties are DROP OFF, except for the birthday host parents and a handful of adults. If you would like more than 8 additional adults to stay, you will be asked to book the premier plus package.  

Premier Package ($550)


  • Genius Gems Parties are for ages 5/6 and older. Only Premier Plus parties may be able to accomodate parties for children aged 4.
  • Up to 16 kids and 8 adults included in the package. The birthday child, and any siblings attending the party will count towards the total number of guests in the party.
  • If there are more than 16 kids attending, you will be charged $40 per child for any additional kids on the day of the party, up to 20 kids. This includes the birthday child and any siblings - they will count towards the final number of guests. 
  • Any parties with more than 8 adults will be asked to book the premier plus package.

Space and Activities

  • 1 premium project per child (slime or Glitter Tile)
  • Staff members to help guide and supervise the party and all activities
  • The entirety of our party room will be reserved privately for your 1.5 hour party.
  • Parties may choose either slime or Glitter Tile as their project. Selecting an engineering project, such as the DIY flashlight or LED project, will be an additional cost of $75 for 16 kids. There will be an additional cost of $5 for every child beyond the initial 16.

Food and Beverages

  • Pizza and juice are included for kids only and provided by Genius Gems. 
  • No outside food is permitted except for a cake or cupcakes provided by the host family.
  • Extra pizza can be requested for an additional cost

Additional Information