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 Post subject: Lot of facted lab made gemstones.
PostPosted: Fri Sep 11, 2015 4:56 pm 
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I was think of selling them on eBay or Craigslist, is that a good idea or is their a site that just deals with man made stones.

The picture does not loot so good so here is a list of whats in the lot

Lab Grown Corundum, Fancy Orange yellow Sapphire - 21.8 g - 109.ct
Aquarium Colored Lab Spinel - 2.2 g - 11.ct
Citrine Colored Stone / Unknown Lab Material - 5.2 g - 26.ct
Topaz Green Coating / Topaz - 0.8 g - 4.ct
Topaz Green Coating / Topaz - Size 6mm
Topaz Green Coating / Topaz - Size 6mm
Purple Colored Lab Spinel - 2.2 g -11.ct
Red Topaz , Lab Quartz - 7.7 g - 38.5ct
Pink Morganite / Unknown Lab Material - 4.7 g - 23.5ct
Purple Colored Lab Spinel - 2.3 g - 11.5ct
Green Lab Quartz - 11.6 g -58.ct
Smokey Lab Quartz -16.6 g - 83.ct
Madagascar Pink Sapphire / Unknown Lab Material 1.1 g - 5.50 ct
Ametrine Yellow/Black / Lab Quartz 4.6 g - 23.ct
Orange CZ Or YAG -6.2 g - 31.ct
Pink CZ Or YAG -1.9 g - 9.5ct
Dark Orange CZ Or YAG - 1.8 g - 9.ct
Yellow CZ OR YAG - 1.6 g - 8.ct
Pink CZ Or YAG -0.6 g - 3.0ct
Dark Orange CZ Or YAG - 1.2 g - 6.ct
Dark Purple CZ Or YAG 1.4 g - 7.ct


Last edited by tourmalinex on Wed Sep 16, 2015 5:18 pm, edited 4 times in total.

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 Post subject: Re: Best place to sell lot of facted lab made gemstones.
PostPosted: Fri Sep 11, 2015 5:17 pm 
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Location: Wylie Texas but in Alaska for a while
You could try the market place. I would look at other listings and see what details to include. (size, weight, description....) It is not an auction format, which means you would have to set a fixed price.

You could always try ebay, and set a minimum to something you would accept and see how it goes.

You would do yourself a favor to get good pictures of them.


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 Post subject: Re: Best place to sell lot of facted lab made gemstones.
PostPosted: Fri Sep 11, 2015 5:32 pm 
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I have taken the stuff to a rock club and to a jewelry stores and stones made with the "unknown lab material" is not plastic or glass/ lead glass and other ideas on what it might be?

Going to update that list in ct and take better photos.


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 Post subject: Re: Best place to sell lot of facted lab made gemstones.
PostPosted: Fri Sep 11, 2015 5:53 pm 
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Location: Wylie Texas but in Alaska for a while
Not picking on you, but you know that you need more info to help identify materials.

FYI, you should be able to determine YAG from CS based on the specific gravity.

Yag should be 4.5 to 4.6

CZ should be 5.6 to 6.

There are several good posts on how to determine the specific gravity if you search of them.

You can also read the link on the left on how to identify materials. It has a section on estimating the RI which would help.


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 Post subject: Re: Best place to sell lot of facted lab made gemstones.
PostPosted: Fri Sep 11, 2015 6:15 pm 
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Did not think of SG,Thanks


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 Post subject: Re: Best place to sell lot of facted lab made gemstones.
PostPosted: Wed Sep 16, 2015 5:10 pm 
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Made a fool of myself with the sg :oops:


Last edited by tourmalinex on Fri Sep 18, 2015 10:55 pm, edited 1 time in total.

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 Post subject: Re: Lot of facted lab made gemstones.
PostPosted: Thu Sep 17, 2015 5:51 am 
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What is the point of all that ?
Get a good gemology course and learn how to determine gemstones.
As Steve would have said : :smt065


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 Post subject: Re: Lot of facted lab made gemstones.
PostPosted: Thu Sep 17, 2015 6:25 pm 
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tourmalinex wrote:
Took all the sg at last.\

I don't believe your SG values are correct. I suspect you are trying to make absolute weighings instead of using the concept of relative density. The reason most "old gemologists" don't use SG is because their equipment cannot easily measure very small or very large objects. Relative density solves that, and one gets a direct reading of the value.
Isi wrote:
What is the point of all that ?
Get a good gemology course and learn how to determine gemstones.

A "Good Gemology Course" will cost one many months of time plus more than several thousand dollars and recommend you to buy a critical angle refractometer for another $1,000. After which, you will find it difficult to find a job to justify these expenditures as modern jewelers now use Raman spectrometers to identify their stones and need laboratory certificates to sell them. Where does that leave the gemologist :?:

The problem of identifiying lab made artificial gemstones is a trivial task and the SG is the way to start. If that is not enough then estimate the B:D ratio, which is a technic that those "Good Gemology Courses" don't teach because their own instructors have never been taught to use techniques less than 50 years old. :cry: :cry:

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"As Steve would have said : :smt065

I assume he is referring to "Guide to Affordable Gemology" :D :D


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 Post subject: Re: Lot of facted lab made gemstones.
PostPosted: Fri Sep 18, 2015 12:36 am 
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Tourmalinex, what are you trying to accomplish here?
You have all these faceted whatevers.

Where did you get all this stuff?

How was it represented to you?

Do you want to learn how to positively identify them and not just speculate on possibilities? Then you either need to get serious about educating yourself, purchasing some tools and learning how to use them or hire someone with the experience to identify them for you.


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 Post subject: Re: Lot of facted lab made gemstones.
PostPosted: Fri Sep 18, 2015 2:06 am 
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Barbra Voltaire wrote:
Tourmalinex, what are you trying to accomplish here?
You have all these faceted whatevers.

Where did you get all this stuff?

How was it represented to you?

Do you want to learn how to positively identify them and not just speculate on possibilities? Then you either need to get serious about educating yourself, purchasing some tools and learning how to use them or hire someone with the experience to identify them for you.


They where all represented as man made gemstones and I bought the lot for $80, and I wanted to sell them without deceiving people or myself,I wanted to make sure the list corresponds with the stones in the lot. Also I found some people who want the stones for projects.


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 Post subject: Re: Lot of facted lab made gemstones.
PostPosted: Fri Sep 18, 2015 2:50 am 
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I considered the individuals on this site more informed then all the other so called gemologist I have met, as for tools I have been looking at them and am not sure what would be a good fit for me, I would need training in what I decided to buy, right now I have a 10x loop, Black light, Microscope, Chelsea Filter and a Pen Light.


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 Post subject: Re: Lot of facted lab made gemstones.
PostPosted: Fri Sep 18, 2015 4:55 am 
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It is not only a matter of buying tools I am afraid.
You need to get training to understand how they work and why and when to use them.
You need to learn plenty of other things as well.
That is why gemology schools exist and what they are made for.
All of us here went through this. There is no shame in doing the same.


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 Post subject: Re: Lot of facted lab made gemstones.
PostPosted: Fri Sep 18, 2015 9:47 am 
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You are right Isi. I oversimplified.


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