To make sugar diamonds you need :
Small heat resistant glass bowl
Pretreated Isomalt pearls
Silicone Gem Mold by First Impressions
Pearl Luster dust
Ice water /just in case, this stuff is pretty hot, you can easily burn yourself/
Prepare your heat resistant gem mold by brushing it with pearl dust, using a fine brush.
Place few pieces of broken up isomalt sticks or few perlas in a heat resistant bowl/small bowl/ and place them in the microwave on a silicone mat, hear them in 15 seconds intervals until they are melted and star to bubble on the top slightly.CAUTION: BURNING HOT MIXTURE!!!
Using a toothpick stir the mixture to get the air bubbles out.
Pour into the molds. This part cane is a little tricky. Because the gem mold cavities are rather small you need a thin isomalt. Isomalt will get thick quite quickly you will need reheat it in the microwave for several seconds. Use a toothpick to control the flow. If there is a small overfill, immediately pick up with a clean Q-tip.
Let isomalt harden for a several minutes and umold the diamonds.
I used Sugar Diamonds on The Seashell Cake
The Designer Cookie Rings with Sugar Diamonds.