August 13-15—East Coast Gem, Mineral and Fossil Show; Better Living Center, West Springfield, Massachusetts
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 Post subject: What types of garnets are these?
PostPosted: Mon May 31, 2021 3:15 am 
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The seller called the stones in the first picture "yellow" garnets, but they don't look yellow to me...

And the seller called the stone in the second picture "malaya" garnet, but I thought malaya garnets are supposed to be pinkish orange...


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 Post subject: Re: What types of garnets are these?
PostPosted: Mon May 31, 2021 9:15 am 
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Hessonite garnets from Tanzania often have the sleepy yellow/brown color and texture of the first two stones.

The pink/orange pear shape is within the color range of Malaya Garnet from Tanzania. Actually it is a classic and desirable Malaya color. Malaya has a broad color distribution. It is properly defined by the component distribution of its pyrope/almandine/spessartine garnet end members as shown in the chart below from the excellent research done by Mr. Kirk Feral.

https://www.gemstonemagnetism.com/under ... etism.html


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 Post subject: Re: What types of garnets are these?
PostPosted: Mon May 31, 2021 9:27 pm 
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Many malaya only show their brownish side under compact fluorescent lights.

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 Post subject: Re: What types of garnets are these?
PostPosted: Tue Jun 01, 2021 12:25 pm 
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What is a "compact fluorescent light"?


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 Post subject: Re: What types of garnets are these?
PostPosted: Tue Jun 01, 2021 2:35 pm 
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The twisty fluorescent bulbs. Technically any shape will do but just saying a 'fluorescent light' sounds more like a UV source.
LEDs probably give a wider range of interesting color shifts overall I think but I'll miss some aspects of cfls as they disappear. Especially Nd YAG going colorless under them, and the bronze hues in malayas.

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 Post subject: Re: What types of garnets are these?
PostPosted: Tue Jun 01, 2021 2:49 pm 
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Learn something new everyday around here.


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 Post subject: Re: What types of garnets are these?
PostPosted: Thu Jun 03, 2021 1:02 am 
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1bwana1 wrote:
Hessonite garnets from Tanzania often have the sleepy yellow/brown color and texture of the first two stones.

The pink/orange pear shape is within the color range of Malaya Garnet from Tanzania. Actually it is a classic and desirable Malaya color. Malaya has a broad color distribution. It is properly defined by the component distribution of its pyrope/almandine/spessartine garnet end members as shown in the chart below from the excellent research done by Mr. Kirk Feral.

https://www.gemstonemagnetism.com/under ... etism.html


Thank you for your reply. What colors of Hessonite garnets are desirable? I've seen a lot of people buying Hessonite garnets lately, and I wonder if I am missing something, to me, brownish orange/yellow is not a pretty color.


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 Post subject: Re: What types of garnets are these?
PostPosted: Thu Jun 03, 2021 2:21 am 
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Hessonite is really just a.yellow brown color of grossular garnet so only available in that color range. It is available in clean bright qualities unlike the posted samples.


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 Post subject: Re: What types of garnets are these?
PostPosted: Thu Jun 03, 2021 3:16 am 
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Top notch stuff IMO is rich orange and slightly sleepy, giving it a velvety glow. Grossular can range from pure yellow to pink-red with rich oranges in between, and can be totally clean down to translucent, but that would be the most classic look.

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 Post subject: Re: What types of garnets are these?
PostPosted: Thu Jun 03, 2021 3:49 pm 
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Here is pic of a hessonite specimen I bought in the 70s from Si Frazier.

I'd call the color pink champagne.

Jeffrey Mine, Asbestos, Quebec, Canada

Something I'm open to researching the next time I see y'all in Tucson. :wink:


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 Post subject: Re: What types of garnets are these?
PostPosted: Thu Jun 03, 2021 5:03 pm 
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I work for Champagne......


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 Post subject: Re: What types of garnets are these?
PostPosted: Thu Jun 03, 2021 5:15 pm 
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Here Here to the Champagne! Sounds more refreshing than cutting these.....

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 Post subject: Re: What types of garnets are these?
PostPosted: Sun Jun 13, 2021 1:58 pm 
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Stephen Challener wrote:
Top notch stuff IMO is rich orange and slightly sleepy, giving it a velvety glow. Grossular can range from pure yellow to pink-red with rich oranges in between, and can be totally clean down to translucent, but that would be the most classic look.


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which are more valuable, the reddish ones on the left or the yellow ones on the right?


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 Post subject: Re: What types of garnets are these?
PostPosted: Sun Jun 13, 2021 3:16 pm 
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Eye of the beholder value in my opinion. The darker slightly saturated with some red are probably going to test out more blended with other garnet varieties. Monetary value in garnets is typically based on variety, grade and size. I personally think rich almandite garnets and fanta orange spessartite are some of most amazing looking garnets after cut and has a good clarity. I think the hessonites as accents give a better value than using say champagne colored smoky quartz. It all ends in the eye of the beholder.

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 Post subject: Re: What types of garnets are these?
PostPosted: Sun Jun 13, 2021 6:03 pm 
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The reddish ones seem to lean brown which is rarely a good thing for a gem's open market value. I haven't checked closely or recently, but just off the cuff I'd guess the golden yellows would be faster to sell and net better prices. Neither color range are inside what I'd call hessonite, even if they're mostly grossular.

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