With each package of Jell-O, mix with 1 cup of hot water, stir until it dissolves, and put it in the fridge. You’ll need 4 separate containers for the 4 different colors. Let this chill until it turns to gelatin.
To make your white filling, add both of your Knox gelatin packets to 2 cups of hot water and stir until it dissolves. Stir in your can of sweetened condensed milk, and then let this sit and come to room temperature while you’re waiting, prepare your Jell-O “jewels”!
Next, take all of your Jell-O and cut it into squares, and pour the squares into your pan. I used a springform pan, but you could use any Jell-O mold you wanted or just a glass dish.
Once you have all of your jewels in place, pour the white filling over them.
Place your dish in the fridge, and allow this to set up. It will take at least 3 hours.
When it’s ready, loosen the edges by running a butter knife around, and place it on your serving dish.