CIBJO releases Gemmological Special Report: considers process of separating measurable facts from opinion; See Gemological Articles below.
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 Post subject: natural corundum
PostPosted: Mon Dec 18, 2017 2:58 pm 
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Hi to all... I have Natural sapphire with a star (tripache) weight 6 ct, i really want to appraise it kindly give me the idea of the value of my stone


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 Post subject: Re: natural corundum
PostPosted: Tue Dec 19, 2017 10:51 pm 
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Interesting.
In order to value anything, one must have comps to base their value on.
Research, research research
https://www.ebay.ca/sch/i.html?_sacat=0 ... piche+ruby
https://www.pinterest.co.uk/search/pins ... e&rs=typed
https://www.google.com/search?q=ebay+tr ... 96&bih=656


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 Post subject: Re: natural corundum
PostPosted: Sun Dec 24, 2017 2:59 am 
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ok i have seen these links but i want to take your point of view what you think about this stone??


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 Post subject: Re: natural corundum
PostPosted: Sun Dec 24, 2017 12:31 pm 
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Hashim, you were given some tools to determine that yourself.
If you read what is written below this part of the forum:

Appraiser's Corner
A section for Professional Appraisers and Valuers to discuss relevant topics.
DO NOT POST JEWELRY OR GEMS NEEDING AN APPRAISAL.


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 Post subject: Re: natural corundum
PostPosted: Sun Dec 24, 2017 8:51 pm 
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This is very fine material and I have never seen it available for cheap. I'd estimate 100/ct as the ballpark of what I have seen noce stones available at. It is a fine and unique stone, so if you don't need money in a hurry put it up for a lot. Rarities often sell slowly so it might as well sell slowly at a healthy price point.

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 Post subject: Re: natural corundum
PostPosted: Sun Jan 07, 2018 1:57 pm 
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thanx stephen u guide me in best way :-)


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 Post subject: Re: natural corundum
PostPosted: Sun Jan 07, 2018 2:00 pm 
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@Barbra Voltaire ok sorry i would not post any more stones for appraisal...


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 Post subject: Re: natural corundum
PostPosted: Sun Jan 07, 2018 2:38 pm 
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No worries Hashim.

This is a learning platform. I would rather show you how a relative value would be determined rather than just throw out a random number.

Stephen's assessment is a good one. Why? Because of his industry experience and knowing where to find some solid examples of similar material to base his value on. (I might have gone a wee bit higher)

I stand with my original advice: research, research, research. That is the only way to develop the experience you need to make wise buys and wise sales.


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 Post subject: Re: natural corundum
PostPosted: Sun Jan 07, 2018 5:06 pm 
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I looked at the ebay links, and the material ranges a lot in price.
I know that in diamonds it is the 3cs for value.
I would like to know why this particular stone is on gthe 100/ct + range.


The one in this post looks much clearer than most on ebay, I assume that that is what is providing most of the value.

(since I seem many on ebay in this size range, and there were plenty with the star, but not many that ere clear)


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 Post subject: Re: natural corundum
PostPosted: Sun Jan 07, 2018 6:00 pm 
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I looked at the ebay links, and the material ranges a lot in price.
As does the quality, carat weight, etc.
I know that in diamonds it is the 3cs for value.
Diamonds are a common commodity. Finding comps are not a problem
I would like to know why this particular stone is on the 100/ct + range.
Looking at the finer quality samples, they seem to hover around $100-$200/carat. It would be next to impossible to find an exact match for comparison...it would certainly involve stumbling on an unlikely window of opportunity. Therefore, one must research several markets and make an educated evaluation. The actual value of the stone will be determined when it is sold.

The one in this post looks much clearer than most on ebay, I assume that that is what is providing most of the value.
Yes...the quality of this one appears better judging only from the photo.


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