Printer friendly
"AcronymFinder.com

What does SI stand for?

SI stands for Slightly Included (second lowest quality of diamond)

This definition appears very frequently and is found in the following Acronym Finder categories:

  • Science, medicine, engineering, etc.

See other definitions of SI

Other Resources:
We have 92 other meanings of SI in our Acronym Attic

Samples in periodicals archive:

They are categorized in different grades that come with symbols like aeF' for flawless, aeIF' for internally flawless and VVS1 for very very slightly included #1), among many others.