You might enjoy reading .30Carbine's post on the subject, which she posted to another thread but is relevant here. An excerpt:
"Meditate upon these things," commands the Holy Word, and James exhorts us to be "quick to listen, slow to speak," and these together fit the picture of how the light bouncing all the more times within the gem produces all the more glory when it emerges. I like that.
An uncut diamond (or any of the variety of gemstones) receives and reflects light rays far differently than the polished jewel - could we call one saved and the other as yet unfound, encased as it is within its hard and ugly outer shell? Each uncovered and polished gemstone in their many varieties of color, hue, size, and number of facets will act and react very uniquely to the one source of light shining upon and into the very heart of all.
The Blue Diamond Web site linked above also declared this interesting truth:
Thank you so much for your fellowship in Jesus, dear Alamo-Girl. I've run out of time this morning! I had so much fun reading everyone's comments here and elsewhere that I ran out of time to post my own! Please forgive me. If you would like to copy and post more of what I wrote yesterday, please feel free to do so. Jesus is so alive among us!