Reliable lap / cert. for colored stones

[Double E]

New to colored gems, is CGL & LGL cert. reliable for purchasing colored stones. Thx a lot~

 

[chrono]

Depending on the size and type of stone (and common treatments), I like GIA, AGL, SSEF. GRS is also reputable. I am ok with AIGS for certain type of gemstones.

There are several labs with the name CGL, Which one are you referring to?
Ceylon Gem Lab?
Certified Gemological Laboratory of Europe
Central Gem Laboratory
CGL-GRS Swiss Canadian Gemlab

 

[Double E]

Depending on the size and type of stone (and common treatments), I like GIA, AGL, SSEF. GRS is also reputable. I am ok with AIGS for certain type of gemstones.

There are several labs with the name CGL, Which one are you referring to?
Ceylon Gem Lab?
Certified Gemological Laboratory of Europe
Central Gem Laboratory
CGL-GRS Swiss Canadian Gemlab

Thx! it’s Ceylon Gem Lab. reputable? Coloured stones look like a more diverse world.

 

[LilAlex]

GIC is pretty good in Sri Lanka. A reputable vendor there feels it is the best there. It is not on par with GIA, AGL, SSEF, or Gubelin.

I know nothing about any other Sri Lankan labs.

 

[T L]

Depends on the stone. For sapphire, ruby, emerald, alexandrite, I would only go with AGL, GIA, SSEF or GRS. I think most other reputable gem labs suffice for other gem species.

 

[peacechick]

If you are buying a stone directly from Sri Lanka, they may not want to send it to any labs outside the country. So GIC, CGL, etc is what they will offer. When you receive the stone, you can double confirm by sending to your own lab. That is what I would recommend for a high value purchase.

 

[Frost]

New to colored gems, is CGL & LGL cert. reliable for purchasing colored stones. Thx a lot~

CGL no, it's literally not worth the paper it's printed on. Seen synthetic padparadscha IDed as natural, spinels IDed as padparadschas, and absolutely anything and everything can get whichever color distinction you'd like. I once saw a bleh muddy blue with a "100% color change" report which the stone didn't reflect even 1% of, you would have needed to be delusional to see a color change in that.
LGL, no clue, never heard of it, but labs in Sri Lanka are like mushrooms after a rain. There are 3-4 good, established, research-capable labs with strict policies and integrity and the rest are mostly paper shops bidding for customers by handing out whatever is asked for.