You are not alone!
It is very confusing because the "Gram Size" is calculated by WATER weight. Powder (Mineral Makeup) is much lighter.
For example, the Bare Escentuals Eyeshadows come in a jar that is about the size of a 10 Gram Jar yet the BE jar reads .57 Grams (just over 1/2 of a Gram) but it would NOT fit into a 5 gram jar. Little confusing huh?
Here is a description of the sizes of sifter jars we carry.
3 Gram Jars - They are about 1 1/4" across and 5/8" tall. Our 3 gram jars are double walled, so the exterior measurements are very close to those of the 5 gram jar, but the interior is smaller. They hold about 1/4 teaspoon of product below the sifter.
5 Gram Jars - They are about 1 1/4" across and 3/4" tall. They hold about 1/2 Teaspoon of product below the sifter.
10 Gram Jars - They are about 1 1/2" across and 3/4" tall. They hold about 1 Teaspoon of product below the sifter.
20 Gram Jars - They are 2" across and 3/4" Tall. They hold about 2 Teaspoons of product below the sifter.
30 Gram Jars - They are 2" across and 1" Tall. They hold about 3 Teaspoons of product below the sifter.
Not all jars that have the same capacity are the same dimensions. For example, the 3 gram jars we carry are double walled and therefore almost the same exterior dimension as the 5 gram jar. There are 3 gram jars that are single walled and therefore smaller in diameter and height.Also note that the sifters take up a considerable amount of the jar. The jars will hold a lot more (sometimes close to twice the amount of product) if you don't use the sifter.
If you are not sure what size you need, try one of our samplers. Available with either clear or black lids, they contain one each of the 3, 5, 10, 20 and 30 gram jars.