7,85 blue sapphire + 5 carat blue sapphire / colourquestion

[aero]

hi folks,
this is my first entry from berlin and my question is this:

i got two sapphires and i am asking myself wich colour they have.
i know that photo is not a real thing to talk about colours but i just need a small direction.
as far as i know both stones are heat treatet only.
ok, let me add some photos:





all photos are shot in a cloudy daylight.

and this is how they appear underwater:
http://s7.directupload.net/images/131113/sdpox4t2.jpg

do you know any gemlovers or dealers in germany?
i want to sell these two stones. the pillowcut stone is free of inclusion and the oval on got one tiny crack in the bottom.
but i would still call it eyeclean.

is there a minimum value of the stones? can somebody tell that? is this how a good sapphire should look like?

if somebody is interested, i would probably sell them under value

i appreciate your help,

aero

 

[aero]

Re: 7,85 blue sapphire + 5 carat blue sapphire / colourquest

here some more:

 

[chrono]

Re: 7,85 blue sapphire + 5 carat blue sapphire / colourquest

You can list these in the Pre-Loved section if you are interested in selling your sapphires. Also note that they generally cost more to purchase than to sell but I think you already know this too. Below are links to several vendors who sell sapphires so that you can compare the pictures and gauge the general market pricing.

[URL='https://www.pricescope.com/forum/preloved-ps-jewels/']https://www.pricescope.com/forum/preloved-ps-jewels/[/URL]

Marc Sarosi - www.africagems.com
Arnold & Rung of AJS Gems - www.ajsgem.com
www.bkkgemstones.com (mainly Sapphires but some other colored gemstones and jewelry)
Andrew Gulij of Gemfix - www.gemfix.com
Gem Line - www.litnon.com
Dana of Master Cut Gems - www.mastercutgems.com
David Wein of Multicolour Gems - www.multicolour.com
John - www.simplysapphires.com
Roger Dery of Spectral Gems - www.spectralgems.net
www.topgem.co.uk (UK gemstone dealer specialising in unheated sapphires and rubies)

 

[aero]

Re: 7,85 blue sapphire + 5 carat blue sapphire / colourquest

thank you very much!

 

[minousbijoux]

Re: 7,85 blue sapphire + 5 carat blue sapphire / colourquest

If they really are as described, then you've got some pretty sapphires there that will probably command a good price, given their size. I caution you though not to use the photos where the background appears blue unless it really is blue.

Good luck with the sale!

 

[pregcurious]

Re: 7,85 blue sapphire + 5 carat blue sapphire / colourquest

Is the color the most accurate in the last picture in which the background is white? It looks like the other pictures are taken on the same background, and both the stone and background seem more blue.

 

[aero]

Re: 7,85 blue sapphire + 5 carat blue sapphire / colourquest

hi,
thanks for replying.
it think the difference ocours due to the change of super makro and normal makro in my camera.
i think this pic will give an almost authentic colour:
(the dots on the surface is dust)



the most important question to me is not selling them quick but getting information about the aproximate value.
isnt there a minimum sure value for minerals like this?

lets say like: the stone is clean natural and it got almost 8 carat. it must be value at least ...?

and thanks again chrono to give me a soft glide in into this forum..

greetz from berlin

 

[minousbijoux]

Re: 7,85 blue sapphire + 5 carat blue sapphire / colourquest

There are certainly ranges that professionals in the trade would be able to provide if they were willing, but that might be a challenge. There are certain reference materials used in the trade, like The Gem Guide which many vendors subscribe to. It has prices for many types of gemstone as well as diamonds. There also used to be a website (perhaps its still around), Gemval.com, that provided this data (although I didn't think the prices were as accurate as those in The Guide). But if you don't have access to this information, then the next best bet is to survey various vendors to see prevailing prices for comparable stones.

But value is a tricky thing, which you probably know. For example, what you could likely sell it for is different than the replacement value that you might insure it for. Or the sale price that a professional seller might be able to achieve would very likely be considerably higher than that which a private party could sell it for.

 

[chrono]

Re: 7,85 blue sapphire + 5 carat blue sapphire / colourquest

The challenge with the Gem Guide book is that unless one knows how to evaluate colour correctly, one could be looking up the wrong value column. Secondly, unless Aero knows with 100% surety that the sapphires are also natural and untreated, the difference in valuation could be significant.

 

[aero]

Re: 7,85 blue sapphire + 5 carat blue sapphire / colourquest

hi guys!

i just spent the whole evening watching thrue a friends microscope.
what i can say now is that the oval 7,85c one is heated.
i found this exact cotton bomb galaxy:

http://tinyurl.com/ma2komx

the pillow shaped one seems to be completely untreated.
i saw unbroken silk and very natural looking sculptures.
this stone is almost free of any inclusion. i had to search hard to find any.

5 carat, haha!

i am not writing this to push my sale!
just spent hours inside this microscope world and i am totally amazed of this.

thank you guys!

 

[minousbijoux]

Re: 7,85 blue sapphire + 5 carat blue sapphire / colourquest

The challenge with the Gem Guide book is that unless one knows how to evaluate colour correctly, one could be looking up the wrong value column. Secondly, unless Aero knows with 100% surety that the sapphires are also natural and untreated, the difference in valuation could be significant.

If aero had access to it, then he would have access to a professional who would be able to direct him in the broad categories The Guide offers But aero definitely needs to be sure of treatment (and unfortunately, looking through a microscope is not going to be sufficient for sale).

 

[chrono]

Re: 7,85 blue sapphire + 5 carat blue sapphire / colourquest

Aero,
Unfortunately, as Minou mentioned above, just your word that a stone is heated only is insufficient for a sale of potentially large monetarily value. Most people have more faith in the consistency, knowledge and skills of a reputable lab such as GIA, AGL, Gubelin, SSEF, etc. than Joe Shmoe who is taking a stab at it using a friend's microscope and trying to ID inclusions via Google search.

1. If it is heated, it could also be diffused which requires special skills to spot the difference and/or specialized equipment that is very expensive.
2. Unbroken silk is not a sign of being unheated. Sometimes the temperature of the heating is insufficient to dissolve all the silk.

 

[minousbijoux]

Re: 7,85 blue sapphire + 5 carat blue sapphire / colourquest

Aero,
Unfortunately, as Minou mentioned above, just your word that a stone is heated only is insufficient for a sale of potentially large monetarily value. Most people have more faith in the consistency, knowledge and skills of a reputable lab such as GIA, AGL, Gubelin, SSEF, etc. than Joe Shmoe who is taking a stab at it using a friend's microscope and trying to ID inclusions via Google search.

1. If it is heated, it could also be diffused which requires special skills to spot the difference and/or specialized equipment that is very expensive.
2. Unbroken silk is not a sign of being unheated. Sometimes the temperature of the heating is insufficient to dissolve all the silk.

Well said. Aero, from time to time, we all wish we didn't have to go through the extra steps of having stones examined by a reputable lab, but when there is potentially a large sum of money on the line, it is what is required - unless you find a naive, trusting and wealthy buyer who will take you at your word...