There are 5 Lapis Lazuli Kits availble based on size please see following for selection and size. Please note each one has its own price as well.
 
A: 49 x 72 mm: thickness is 17 mm: Weight is 80 grams. $12
B: 55 x 81 mm: thickness is 19 mm: Weight is 116 grams. $10
C: 52 x 85 mm: thickness is 17 mm: Weight is 90 grams. $15
D: 51 x 73 mm: thickness is 18 mm: Weight is 87 grams. $15
E: 48 x 78 mm: thickness is 20 mm: Weight is 110 grams. $15
 
Lapis Lazuli, while technically a rock it is composed of different minerals, blue Lazulite which is rare or the common Hauyne along with white calcite and pyrite. There must be 25% or more blue material to be called Lapis Lazuli.