Please help me purchase an "upgrade" sapphire

[princessandthepear]

Hello and Happy New Year. After reading several threads on PS, I have resolved to purchase my "upgrade" gem first instead of several small purchases throughout the year. To this end I am looking at a cushion cut blue sapphire. The sapphire is approximately 2 carats and 5.5 x 7.7mm. It is described as a medium toned blue with no modifiers, even coloration, eyeclean and intense saturation. The sapphire is heat treated but lacks a gem report at this time. Enclosed are a daylight photo and an indoor photo. If I decide to proceed should I make the purchase contingent on a GIA or AGL brief? I had thought I saw this sapphire mentioned on a previous PS thread but I went back a year and could not find mention of it.
www.pearlmansjewelers.com/gemstones/?sku=87479


I am also looking at an unheated sapphire with a gem brief and a comparable price. It has a slight violet modifier and is slightly less saturation than the pictured gem. The unheated sapphire has a color shift from blue to a more blue violet in daylight versus indoor conditions. I would be very happy with either sapphire but wondered if I should choose the unheated sapphire. I always read of PSers recommending unheated gems. What are the advantages of an unheated sapphire versus a heat treated sapphire? ( On a side note, it is amazing how much darker the photos appear on my computer versus my phone.) I am hesitant to post a photo of the other gem since I do not have it "on hold" yet.
On an unrelated topic, could we have a thread on what constitutes a "precision" cut on a gemstone? I, for one, would love to learn what to look for in a quality cut.
Thank you for your guidance, opinions and advice in making this decision.

 

[Jbows]

This is an uneducated opinion but here we go anyway. Something about the cut bothers me. Maybe it’s just me but it looks super wonky. And I also don’t like how part of it blacks out. Again, that’s just me and I could be objectively wrong.

 

[whitewave]

It looks darker than medium to me. I recently bought a heated sapphire because I simply don't care about heated vs unheated.

Here is one: https://www.finewatergems.com/store/p346/2.06_ct_Unheated_Violetish-Blue_Ceylon_Sapphire.html

I'm going to bed now. TTYL

 

[valeria101]

.

Such a nice blue !

... 'guess this is why they heat 'them - so would I

 

[Jbows]

@princessandthepear I know I’ve posted this one before but it’s so pretty. It won’t have the color zoning an elongated shape has and has an amazing cut! http://rogerdery.com/gems/blue-sapphire-signature-round-1712016/

 

[chrono]

The sapphire looks very pretty from your pictures. How does it look under your home lights, which is most often times the worst case scenario? I would decide based on which appealed to me most, rather than treatment status, as long as it isn't diffused and I'm not looking for a diffused sapphire.

Advantages of unheated vs heated? None really, other than mind-clean preference and pocketbook allowance. I've seen excellent non-precision cut and horrible precision cut gemstones. I've also seen jaw dropping precision cut and terrible precision cut gemstones.

My definition of precision cutting (not my website as I'm not a lapidary nor in the trade):
http://www.osirisgems.com/precision_cutting

 

[jewelsforalltosee]

From your pictures it does look a bit dark to me in places. Can you post more pics maybe with different backgrounds?
I would definitely want either an AGL or GIA report. Heated vs. unheated is personal preference and budget, heating enhances color, but unheated are very rare.