LGL Gem Lab

[Double E]

Wish someone in this community can shed some light on the background of this gem lab, where it is in terms of reputation.

Also how reliable of its gemstone scanner used to verify stones’ proportions, it sounds like sarin for colour stones.

And what is it’s relationship with GIA?

 

[Autumn in New England]

Good morning! I have heard of LGL ("London Gem Lab") while browsing gems online. Despite the name, their headquarters appear to be in Sri Lanka... I remember Googling it previously and seeing a very sketchy looking building. So it may be a local lab where Sri Lankans go to preliminarily test gems. I haven't ever really heard much with regard to their reputation, but I'm one of those crazies who only trusts the major institutions. So it would be a no-go for me, especially with corundum (because it requires specialized equipment to test for treatments). As far as I know, they do not have any affiliation with the GIA. With regard to the accuracy of their gem imaging, I guess it would depend on the software they use. I know AGL uses Accu-Vu, which is supposed to be quite advanced. HTH!

 

[PrecisionGem]

The best scanner to verify a stones proportions are your own eyes. Proportions can make sense if you are comparing round diamonds, but for colored stones make no sense.

I could cut a stone with a very high crown, that if you went by proportions you would think would not perform well, when in actuality is spectacular. Trying to decide if a stone is cut well by comparing crown height to pavilion height is really nonsense.

 

[Double E]

Thanks both, my questions come from that even some of my local sellers (Hong Kong) sells stones with this LGL report. I didn’t pay much attention to it since the majority of their gems are of lower quality, from giant window that you can barely see the stones’ colour, or “alexandrite” with the slightest colour shift, to paler than generic aquamarine “paraiba” etc. Until I am aware that such lab report is also used by Antony’s inventories, that as you know I am having an eye on his Spess.

In deed I am not trying to look for specific range of crown angles, or particular pavilion depth etc., cox I understand it’s different from round diamond. More accurately my concern is for example for below stone, those angles on the right side of the stone is generally and consistently steeper than angles on the left, with many of the variances as large as 3 degrees.

This, plus the side view image on the left, are showing unparalleled table and girdle, as well as an uncentred table. This is solely from a mathematical point of view. I am not sure if I am over analyzing, just I likely will send the stone to make the pendant directly, that I have to clear my concerns as much as possible before purchase, because returning a set stone and returning it to Africa is simply not my option.

 

[chrono]

Are these variances visible to your eye? Can you please post pictures of the spessartite? The above tells me that it is not a precision cut stone but there are plenty of beautifully cut non precision cut CS too.

 

[Double E]

Are these variances visible to your eye? Can you please post pictures of the spessartite? The above tells me that it is not a precision cut stone but there are plenty of beautifully cut non precision cut CS too.

Spessartite Mandarin Garnet Oval 2.55 Carat - Rare Gemstone Company

They don't come better. Flawless, top cutting and the finest color possible in this gem type. Mandarins of this pedigree are rare.

www.theraregemstonecompany.com

Thoughts welcomed.

 

[chrono]

The spessartite's cut looks wonderful to my eye. I would set and wear it proudly.

 

[Autumn in New England]

Spessartite Mandarin Garnet Oval 2.55 Carat - Rare Gemstone Company

They don't come better. Flawless, top cutting and the finest color possible in this gem type. Mandarins of this pedigree are rare.

www.theraregemstonecompany.com

Thoughts welcomed.

Well you know how I feel about their spessartines! It looks like mine's twin!! I don't think you can find better, personally. She gets 2 thumbs up from me.

 

[Autumn in New England]

@Double E

It occurred to me that we may be talking about 2 different things here. LGL ("London Gem Lab") was the Sri Lankan one I mentioned in my first response. However, the certificates that accompany gems from The Rare Gemstone Company are totally different. In that case, LGL refers to Lapigems' in-house lab. Lapigems is The Rare Gemstone Company's corporate name. Sorry for any confusion! After you subsequently linked that spessartine, I realized you might be referring to Lapigems.

 

[Double E]

Well you know how I feel about their spessartines! It looks like mine's twin!! I don't think you can find better, personally. She gets 2 thumbs up from me.

I agreed that oval together with yours are a rare and perfect twins~

 

[Double E]

@Double E

It occurred to me that we may be talking about 2 different things here. LGL ("London Gem Lab") was the Sri Lankan one I mentioned in my first response. However, the certificates that accompany gems from The Rare Gemstone Company are totally different. In that case, LGL refers to Lapigems' in-house lab. Lapigems is The Rare Gemstone Company's corporate name. Sorry for any confusion! After you subsequently linked that spessartine, I realized you might be referring to Lapigems.

Oh thanks for pointing out this, I didn’t realise that!

 

[Double E]

The spessartite's cut looks wonderful to my eye. I would set and wear it proudly.

Seriously considering~