Diamond 1 seems fine. If you can see the real diamond then see how you feel about it.

Diamond 2 I don't think that is the full GIA number.

Diamond 3 proportions I am not that conformtable as 35.5 crown angle is best paired with 40.6 pavilion. But if you can see the real thing, then it is good.

Thanks for your comments sifu. I have yet to see the loose diamond 1 as it has to be brought from another store, I will give it a look next Monday.
Based on your previous replies, you recommended 34 to 35 degrees for CA. So 35.5 will be less bright but more fire? Will there be any light leakages for this pairing?

The HCA score is 1.2
Light Return: Excellent
Fire:Excellent
Scintillation:Excellent
Spread: Very Good
HCA Score : 1.2 - Excellent - within TIC range

Diamond 2, report is dated 2006
https://www.gia.edu/report-check?reportno=14004992

35.5 will still be bright. 35.5 is always best paired with 40.6. For other angles like 40.8, you will need to have the idealscope to see if there are any apparent light leakeges. If it is paired with 41 and above, I will forget about it. Crown and Pavilion pairing is always an inverse relationship. One shallow one steep or vice versa. 35.5 crown is a steep crown angle while 40.6 is a shallow pavilion, so it can work well if the cut is up to par. Remember that proportions is not the only factor, it is just one of the factors.

To me, for GIA, the best proportions will always be 34.5 crown and 40.8 pavilion as that is the original Tolkowsky angles. And also the safest too. Other angles can work well too, such as 34 crown and 40.8 pavilion. Today I am helping my friend to source from supplier and we find that it has the best ASET.. It even win the ASET for a 34.5 crown and 40.8 pavilion probably due to some other factors, but truth to be told, that 34.5 crown and 40.8 pavilion diamond I saw is already considered one of the top in the virtual inventory market... Just that this time the other dimaond wins. The other pairing is 35.5 crown pair with 40.6 pavilion. These are the few pairings I saw before and they work well.

For others, we will need to go case-by-case basis. But what I can say that... Pls skip anything above 41.2 pavilion.

As for the 2006 stone, I won't buy it as it may be a second hand stone or it may be so unattractive that it is still there. Unless I really like how it looks, I won't ask about it further. Of course the decision is merely yours...

My advice is try to compare with any signature stone in the stores. Signature stones usually have better proportions and hence higher price.

And HCA is really just for reference only, an actual view of the stone is more practical. With performance images like ASET and Idealscope will be best but only in dreams you may be able to get it from brick-and-mortar.

Update:
And dimaond 2 is a Lumiere stone - Hearts and Arrows brand carried by Tomei... So it is supposed to have better proportions and exhibit hearts and arrows... By right is should perform well. Try to compare it with others.

This post has been edited by kambingkoh: Sep 14 2019, 09:00 PM

Wow correct, diamond 2 is indeed from Tomei!
I feel I'll opt for diamond 1 as it has better color and carat size even though the proportion loses diamond 2. The H color by Tomei looks yellowish under phone flashlight.

I couldn't compare the performance side-by-site as they were from different stores, but under the ASET & H&A scopes they look virtually identical to my untrained eyes. Real world performance under LED and florescent lighting is excellent as well. If viewed side by side I'm sure there will be some difference, but individually I'm hard pressed to notice any difference. I'm leaning more towards the first diamond due to the more competitive pricing, going back for a second viewing and hopefully placing an order as well..

All right!

All right! Choose the one that you are most comfortable with and one that you like the performance!

Hey Sifu, the parameter on the renderings using Diamcals, does that mean will the diamond shine bright in real life?? Which in this case, i see that the 0.6carat diamond shows F color ??

F means Failed I believe. That is a really really really bad ASET.

This is an example of how a good ASET should look like:


Read more here: https://www.whiteflash.com/about-diamonds/d...id=myengringexp (affiliate link)

In the cases I provided, only diamond 1 looks much more normal... And yet this is just a rendering based on estimated proportions as GIA rounds up the figures.. For instance, a 34.3 crown angle is 34.5 and 34.7 crown angle is also 34.5. BTW, this is assuming diamond 1 has top cut quality, proportions are just numbers that represent a diamond in 2-dimension perspective, we can get this sort of number by averaging the angle of multiple corners, for example, crown angle 1 is 33, crown angle 2 is 35, we will get 34. Cut quality regards to how well and how close each corner is similar to one a another. When one corner differs a lot to another, we will have cut quality issue.

I can only say if you the 0.6ct will perform badly in real life. The 41.6 pavilion angle will leak the light out of the diamond, since the crown angle pairing is 34.5. And I can say in real life, it will be absolutely look "just" like a diamond, with no performance, at all. You can certainly get much much much better diamonds. Drop by KL PJ wedding fair and check things out if you have the time next week.

Dear Sifu, thanks for the time and explanation.

I have just done HCA score for the first diamond (GIA 2156790668) and the score comes out to be 2.3. The price quoted for this together with 18k white gold ring is RM 6k.

I will check again in other store.

Are you comfortable to buy based on photos and videos alone? If yes, both Tailored Jewel and Zcova offers pretty competitive prices. If you want real diamonds to look at, you can look for either iDo Jewellery or The Gem Tribe.

anyone know where to buy only diamond alone?

Wah Chan sells loose diamonds. Other similar ones will also sell you loose diamonds. Some diamond brands such as Forevermark cannot be bought as loose diamonds though.

May I know what sort of diamonds are you looking for?

Hi, can any sifus tell if this diamond is good to buy?

0.32 carat, Colour I, VS2, cut, polish and symmetry are excellent where symmetry (4.40-4.42 x 2.72mm), Table 55.6%, total depth 61.7%, crown 15.2%-34.4, girdle 3.4% faceted, pavillion 43.1% – 40.7, lower girdle 75%

Thanks

Hmm. Does not seem like GIA diamond. IGI? AGS? Cert number? Price? Actual stone viewable?

It’s actually a diamond with its setting from love n co, only have iidgr report.

How much?

I think bout 6k plus

OK.. Based on your specs, that diamond will be Hearts and Arrows or very close to it. It should be branded as a LoveMarque diamond. IIDGR is a relatively new grading lab from DeBeers, I don't have any solid statistics to comment on how good is their grading so I would just take whatever stated on the cert as final. What I really like about the cert is that they include the actual Hearts and Arrows image of the stone. This is one of their strength. But for this price, unless the ring setting is very very special with side diamonds, I would say it is overpriced or perhaps the price is without any haggling.

Can you get comparable diamonds with actual Hearts and Arrows printed on the cert in local market? I believe you can... I think Suen at Bangsar has the actual Hearts and Arrows image printed on the cert as well. Their brand is Love Diamonds, graded by IGI. Their price should be similar but should be able to come with better colour on paper.

Of course, you can go even cheaper if you buy non-branded ones. For example, if I were to sell my 0.42ct D VVS2 GIA 3EX, and you to custom it at Memory Jewellery:

https://m.facebook.com/story.php?story_fbid...499356163766575

You can find a more thorough elaboration of my diamond here:
http://www.myengagementringexperience.com/...bility.html?m=1

Memory Jewellery settings:
https://memoryjewellery.com/category/engagement-ring/

My diamond is RM 4900. Memory Jewellery base price for ring setting is RM 1499. Total is RM 6399.

Do note that the diamond proportions of my diamond is consider one of the top in the market, and the cut is also some of the top.

And for ring setting, I even found somewhere cheaper but yet to give it a try.

This post has been edited by kambingkoh: Sep 17 2019, 05:19 PM