Gem Appraisal Services in Singapore For Performance Analysis

This question came in from one of our readers via email.

“Thank you for the website and the information. Apart from Nanyang, Raffles and Far East, are there other diamond appraisal or grading services in Singapore? I am looking for one that does hearts and arrows, and light return/brilliance/fire/scintillation analysis.

Hope you can assist me on this query. Thanks.” 

finding a jewelry appraiser in singapore

Where can you find a diamond appraiser or gemological service in Singapore?

Gemological Labs in Singapore That Are Available to the Public

Hi there,

Besides the 3 labs that you had mentioned above, there are 2 other labs who offer gem appraisal services in Singapore. This makes a total of 5 labs for you to consider visiting.


Personally, I had never personally tested the service of SIG and Ideal Gemological Laboratory. So, I can’t comment on how accurate they are in terms of their analysis and grading. However I believe these services won’t be on par with the standards you would expect from GIA or AGS.

To my best knowledge, there is no widely accepted lab which grades a diamond for its “hearts and arrows” in Singapore. For example, you won’t see an A+ or “ideal” hearts and arrows rating in lab certificates. There are some exceptions to this when we look away from reliable labs like GIA or AGS.

For example, the HRD lab and EGL does grade H&A and will include the corresponding imagery in their report. However, these labs follow their own guidelines on what makes a hearts and arrows diamond and what doesn’t.

The point here is that there is no industry-wide acceptance on how the grading should be done for H&A patternings. There’s no way you can know how strict or how lenient they are in terms of this. In a way, even if the diamond is graded as “ideal”, the rating is meaningless.

At the time of typing out this reply, I had just finished writing up a whole section to discuss this issue on

Problems With Hearts And Arrows Grading Standards

Here’s what I can say, one person’s labeling of hearts and arrows might differ from another person’s. For an analysis, this can be done with the hearts and arrows viewer where you can see the patterning for yourself. I am assuming that you are looking for someone who can provide you with photographs of your diamond under such a viewer and you probably want an opinion from him/her. My advice is to let your own eyes determine this.

For light return/brilliance/ analysis, you might want to call in and check with the labs to see if they can perform these examinations and provide you a verbal or written report. If you are looking for someone who can analyze the diamond using proper light performance equipment like the ASET or Brilliance Scope (special tool that Good Old Gold has developed), I am afraid I don’t know of any local grading labs that currently offer such services.

That said, there is a free tool called the Holloway Cut Advisor which you can use to plug in different variables yourself. Read my tutorial about the tool here. Alternatively, you could purchase your own ASET or Idealscope for your personal use. They cost about $50 each and work out to be roughly the same as an appraisal’s cost which makes them a worthwhile investment.

You don’t have to buy your own ASET scope or Ideal scope if you don’t want to. Vendors like WhiteFlash, JamesAllen and BrianGavin can provide you these data and videos to help you make better decisions when buying a diamond. Check them out!

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