There are currently 5 names in this directory beginning with the letter L.
Lab grown diamond
Lab grown diamonds, which are also known as cultured diamonds, have the same physical properties and chemical makeup as mined diamonds. The only difference between them is that lab made ones come from a controlled environment.
A laser inscription is an optional engraving of numbers and letters on your diamond. It can be used as a unique identifier, though it's not visible to the naked window. You would need a magnifying lens to see a laser inscription.