provexum they will issue a diamond grading report for this diamond and note the laser drilling on the report. Process #2 Fracture Filling- Now this process presents a whole bunch of concerns! It can be difficult to detect, even by people who you would think that they should know what to look for... Normally a purple to orange flash can be seen when the stone is turned and light is reflected off the area that has the fracture filling. Fracture filling clarity enhancement is the same process that is used when you get a crack in your windshield. A liquid is forced into the crack (fracture) and just like magic... it disappears! It really is a dramatic change in appearance of the diamond. The liquid that is used is a glass-like material which   https://www.bluesupplement.com/provexum/