O.o Um... Is that a diamond then? I didn't realize there could be other kinds of inclusion other than carbon... Now my brain is in overdrive. I wonder what a Colorless diamond with one huge, perfect Alexandrite inclusion would go for on the market today.
That would look very cool, however Alexanderite is a variety of the gem species Chrysoberyl which would not occur as an inclusion in diamond. I have however seen a color change garnet inclusion in diamond once, didn't get a picture of it however, it was about 1/3 the diameter of the diamond which was only about 0.4 carats or so. But the color change was fairly stark. From cool greenish in fluorecent light to a warm purple red in incandecent. Wish I could go back and photo it, but I guess I missed out hopefully another one will turn up...
I've seen a couple with the color change garnets. I just didn't see any that were D color and 2.417ct (2.417 is the refractive index of diamond) as mentioned in that earlier post. Regretfully I was not able to purchase the diamonds with those inclusions as they were in for grading and I only saw them because of the research dept(at GIA) brought in instructors every so often.
Hmm, interesting. I have never seen this before. I'll go ahead and ask although my stupidity will show, I take it that you can't see them without magnification right? Just curious. How often is laser drilling done? Thanks for humoring me and my ignorance on the topic.
Its pretty uncommon, makes the diamond "treated" so it will not only trade for less, but customers hear the word treated and usually stay away.
The positive aspect of laser drilling is you take a diamond which has a nasty, dark, eye visible inclusion and sometimes make said stone eye clean. Dollar wise, going from an I1 clarity to the look of an SI2 clarity (I would still grade them as they would be without treatment) with the price of an I1.
They are not for everyone but for some customers on a limited budget who want size without sacrificing color or cut, and don't mind the fact that they are treated, they are a good alternative.
Thank you very much. It does help. I have heard about the treated diamonds and people do tend to stay away from them. Just wasn't completely sure how it all worked. By doing the drilling does it make the diamond more prone to cracks or anything in the future? Thanks again.
No, drilling is a pretty stable treatment. In effect you are drilling to an inclusion and using acid to remove the color of it. The drillhole itself it the size of a pin hole.
The treatment that is deamed unstable is fracture filling. Where you take a diamond that has a large feather which is opaque and filling it with a substance that is closer to the refractive index (how quickly a stone transmits light) of diamond making the feather virtually colorless and alot less noticable. The drawback to this is if you heat the diamond up (i.e. with a jewelers torch during repair or with the steamer when you are cleaning it) sometimes the filler will come out causing you to be able to see the inclusion again.
The only problems that this causes is when the treatment is not disclosed and now the customer sees the inclusion for the first time as it was before the treatment.
All treatments should be disclosed at the time of sale, or else lawsuits are sure to follow. There is alot of "Inside Edition" type media coverage in this respect.
As with all aspects of diamonds knowlege and education not only in customers, but with sales staff as well, will defeat any misunderstandings on this issue.
Thank you so very much for the information. I am really enjoying learning more about gemstones and diamonds and the treatments that are done to them. I do appreciate you being patient while I ask some crazy questions.
I have a diamond that has inclusions that look like bubbles. The only one that really bothers me is a fairly big one right in the middle. This stone is not graded by anyone so I'm not sure what this type of inclusion is called. The question is, can this type of inclusion be fixed? Is it too costly for a stone that is under a carat?
Unfortunately a clear "bubble" is actually an included diamond crystal. This type of inclusion will not benefit from laser drilling. Laser drilling is primarily used to drill to a dark inclusion which is eye visible and make it colorless (or as close to as possible) making it less visible to your bare eye.
If your inclusion is already colorless and visible to the bare eye, there is no treatment that I am aware of that will visually justify the cost of the treatment.
No reason to be sorry. I was just wondering. I'm getting a beatiful .73 g vs2 stone from DBOF. It's on it's way back to be set. The stone I was speaking of was the first one that we bought. Thanks for taking the time to answer though.
Here is another one I found. This one was drilled down to a feather which is now opaque white. I did not get to see the inclusion before the treatment, however I assume the feather was a brownish color with iron oxide staining.