Find your diamond
Find your jewelry
shape
carat
color
clarity

New to coloured gemstone buying? Read this first!

amazingAkj

Rough_Rock
Joined
May 21, 2015
Messages
6
Hey chrono, can you post pictures of whatever you have mention in your post so that it will be easy to recognize?
 

chrono

Super_Ideal_Rock
Premium
Joined
Apr 22, 2004
Messages
37,193
amazingAkj|1432296687|3879995 said:
Hey chrono, can you post pictures of whatever you have mention in your post so that it will be easy to recognize?
Can you please be more specific? I've posted a lot of things. :lol: I do try to post links to studies/papers wherever possible.
 

Abzurd

Rough_Rock
Joined
May 23, 2015
Messages
1
Hi, I'm new to the world of coloured stones. During recent travels been exposed to tourmaline and emerald and decided I will learn and maybe create opportunity out of what has presented itself to me... Learnt a fair bit already in a short space of time...
 

LD

Ideal_Rock
Premium
Joined
Jun 29, 2008
Messages
9,630
Abzurd|1432366364|3880357 said:
Hi, I'm new to the world of coloured stones. During recent travels been exposed to tourmaline and emerald and decided I will learn and maybe create opportunity out of what has presented itself to me... Learnt a fair bit already in a short space of time...
Abzurd - I'm glad to hear that you're enjoying the learning. Actually you'll find that won't stop because there's always new things to learn (especially about treatments) to keep us on our toes! We can't relax! :)
 

chrono

Super_Ideal_Rock
Premium
Joined
Apr 22, 2004
Messages
37,193
Gem lab listing

USA
AGL is the top choice.
GIA is also good.

Europe
SSEF, Gubelin and GIA are the top choices.
Chris Dunaigre, GGTL and GRS are also good.

Asia
SSEF, Gubelin (mobile lab), Lotus Gemology and GIA are top choices.
For all else, as long as they aren't corundum (sapphire or ruby) which requires better equipment = AIGS, GIT, Burapha, Tokyo Gem Lab, Emil Gem Lab, Nanyang Gem Institute
 

userangl28212003

Shiny_Rock
Premium
Joined
Jan 26, 2014
Messages
473
Chrono|1437659749|3906462 said:
Gem lab listing

USA
AGL is the top choice.
GIA is also good.

Europe
SSEF, Gubelin and GIA are the top choices.
Chris Dunaigre, GGTL and GRS are also good.

Asia
SSEF, Gubelin (mobile lab), Lotus Gemology and GIA are top choices.
For all else, as long as they aren't corundum (sapphire or ruby) which requires better equipment = AIGS, GIT, Burapha, Tokyo Gem Lab, Emil Gem Lab, Nanyang Gem Institute
Doesn't AIGS have better equiptment now for testing rubies and sapphires?
 

Niel

Super_Ideal_Rock
Premium
Joined
Jul 23, 2012
Messages
18,766
Chrono|1437659749|3906462 said:
Gem lab listing

USA
AGL is the top choice.
GIA is also good.

Europe
SSEF, Gubelin and GIA are the top choices.
Chris Dunaigre, GGTL and GRS are also good.

Asia
SSEF, Gubelin (mobile lab), Lotus Gemology and GIA are top choices.
For all else, as long as they aren't corundum (sapphire or ruby) which requires better equipment = AIGS, GIT, Burapha, Tokyo Gem Lab, Emil Gem Lab, Nanyang Gem Institute
I see grs used more than I used to. Is it just that it's uncommon in the US? Or is it really better outside the US than in?
 

Johndev478

Rough_Rock
Joined
Jan 24, 2016
Messages
1
Wow, what an informative post. Really helpful for those who are new to buy gemstones. Much more important things are described here. I bought amber stones from "Drfinejewels.com",which is a good wholesaler company registered in the Dominican Republic. There you can find all type and color of stone. Thanks a lot.........
 

LisaRN

Ideal_Rock
Premium
Joined
Nov 1, 2007
Messages
3,186
Great Post! I would like to add some red flags that need to be investigated by potential buyers.

1. Any color described as "deep". May actually mean "very dark."
2. Any seller who does not fully answer your question. For example you ask "Does this spinel black out in sunlight?" They respond with "The spinel looks best under artificial light as most spinels do but I think you will will love this stone." If they do not answer your question then consider this a red flag.
3. "Sleepy" stones. This is usually used to describe a stone with micro inclusions that will "glow" under sunlight. However, if a stone is sleepy and not well saturated it may be a lackluster stone in sunlight. Ask for photos under multiple lighting conditions and make sure the seller has a return policy.
4. A great return policy does not mean a true representation of a stones by a vendor. For example- many pics and videos can be manipulated to show the stone at it's best. A seller can gain great feedback because they have a good return policy when the buyer is relieved that their return was accepted. If you get burned once (for example your pink or blue stone turned out to be grey) please be kind enough to give honest feedback.
 

AandCGemTradingCorp

Rough_Rock
Trade
Joined
Mar 5, 2016
Messages
10
Wow! Being new to this forum, I found this to be the most complete and sage advice that anyone could read! I would only add one more piece of advice, to trust your own instinct- both about what you are looking at and who you are dealing with- your instincts, combined with this wonderful advice, should bring you to happy conclusions in a most difficult arena!
 

Nicolette

Rough_Rock
Joined
Mar 29, 2016
Messages
7
I'm also new. After reading the whole thread filled with great advice, I'm not sure I want to jump into 'any' stone now :read: I think I'm going to continue searching and comparing for a bit longer. Thank you.
 

Razz

Rough_Rock
Joined
Oct 10, 2016
Messages
47
onedrop|1337722177|3201140 said:
LD: thank you for taking the time to write up all that valuable information! I am (was) clueless about colored stones, even though I've wanted one for years, but now after reading your write-up I feel so much better about making a good choice in the future!!
Another big thank you from another newbie here. I used to shy away from purchasing colored stones, but now I feel a little more confident in taking the leap into the technicolor world. Thanks for the helpful information.
 

DeNice67

Rough_Rock
Joined
Feb 7, 2017
Messages
2
wow Thank you! So much information, I am almost overwhelmed :clap: Thank you all. Its awesome to find a place like this where we can learn before we buy. I am looking at buying a Spinel, I love them! I am learning a lot but if there are direct tips to give me before I purchase my dream stone. I would appreciate it. I am learning to look by mm size instead of ct size. Correct? They seem to be bottom heavy? I attached the color....... no one in the stores in St. Louis suggests I buy one, and I don't know why also the fact that they don't carry them anywhere in my area, means I need to order. That is scary. But I am researching my butt off. Input?

peachish_pink_med_light.png
 

DeNice67

Rough_Rock
Joined
Feb 7, 2017
Messages
2
ok I found another forum from 2012 that had a lot of answers. I searched "Spinel" and I found a lot of info. I am new here, and didn't know how to do that. You guys are probably sick of Spinel questions. :)
 

minousbijoux

Super_Ideal_Rock
Premium
Joined
Aug 5, 2010
Messages
12,296
DeNice, it would be best for you to start your own thread if you want people to see your questions and respond. :))
 

catsareawesome

Rough_Rock
Joined
Apr 4, 2017
Messages
3
Hello. New kid on the block here...thank you very much for the lovely information, I certainly learned a lot! I've always been attracted to "pretty rocks" when I was a lass, then got into jewellery making, much to the delight of my teenaged daughter. I'm learning a lot along the way and want to learn more about coloured gemstones and have so many questions, will keep reading...and learning :))
 

Saleh001

Rough_Rock
Joined
Mar 10, 2020
Messages
9
Do fake/synthetic/man made colored gemstones have any value at all? I mean is there expensive man made colored gemstone
 

T L

Super_Ideal_Rock
Premium
Joined
Sep 20, 2008
Messages
23,224
Do fake/synthetic/man made colored gemstones have any value at all? I mean is there expensive man made colored gemstone
Not on the secondary market. In fact, the synthetic diamond market has probably trashed the value of real diamonds on the secondary market, unless they’re larger and come with a GIA report. You will never get your original purchase price for a lab stone, unless you paid very little for it in the first place.

Synthetic diamond is probably the most expensive man-made stone, especially in fancy colors.
 
Be a part of the community It's free, join today!

Most viewed threads

    blog 7
    blog 7
    blog 5
    post 3
    post 3

Need Something Special?

Get a quote from multiple trusted and vetted jewelers.

Holloway Cut Advisor



Diamond Eye Candy

Click to view full-size image.

New posts

Top