Round|Natural|GIA

3.99ct E SI2 Round Natural Diamond

EX • E/SI2 • GIA 6221251339

Certificate GIA 6221251339

Diamond specifications and retailer prices

From HK$554,809 HKD
$70,715 USD
As of October 29, 2026
Save HK$174,599 HKD (24%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: HK$973,596 HKD at MOH London · As of October 8, 2026
View at MOH London

About this 3.99ct natural round diamond

This 3.99ct natural round sits in the three to five carat band, graded E colour (colourless) and SI2 clarity (slightly-included), with a top-tier cut grade and certified by GIA 6221251339. Listed at 19 retailers as of October 29, 2026, with a 31% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. SI-grade stones are eye-clean roughly 60 to 70% of the time at this carat range. Check the inclusion plot on the cert and ask the retailer for high-resolution video before buying.

The 4Cs

3.99
Carat
E
Colour
SI2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 6221251339
Dimensions10.32 × 10.29 × 6.19 mm
L/W Ratio1.00
Top View
10.32 mm10.29 mm3.99 ctE / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 6221251339
Side View
Table 58.0%CrownGirdle: MediumPavilionCulet: NoneDepth 60.2%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 29
Current: HK$973,596 HKD|Low: HK$549,623 HKD|High: HK$976,177 HKD|Avg: HK$661,594 HKD|-0.1%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
October 30, 2026
Retailer 5HK$557,614 HKD
Retailer 2HK$561,045 HKD
Retailer 8HK$566,138 HKD
Retailer 7HK$587,881 HKD
Retailer 9HK$660,779 HKD
Retailer 3HK$664,575 HKD
Retailer 6HK$687,017 HKD
Retailer 4HK$729,408 HKD
MOH LondonHK$973,596 HKD

37 data points across 9 retailers

19 retailersHK$554,809 HKD to HK$729,408 HKD

B+
Cheapest Retailer
-
HK$554,809 HKD
$70,715 USD
B+
Retailer 2
-
HK$557,614 HKD
$71,073 USD
View
Retailer 3
-
HK$559,697 HKD
$71,338 USD
View
Price last confirmed 25 days ago
B+
Retailer 4
-
HK$561,045 HKD
₹6,810,465 INR
View
B+
Retailer 5
-
HK$584,591 HKD
$74,511 USD
View
B+
Retailer 6
-
HK$587,881 HKD
$74,930 USD
View
Retailer 7
-
HK$617,606 HKD
$78,719 USD
View
Price last confirmed 22 days ago
B
Retailer 8
-
HK$636,208 HKD
$81,090 USD
View
B
Retailer 9
-
HK$636,208 HKD
$81,090 USD
View
Retailer 10
-
HK$643,340 HKD
$81,999 USD
View
Price last confirmed 33 days ago
Retailer 11
-
HK$643,340 HKD
$81,999 USD
View
Price last confirmed 30 days ago
B
Retailer 12
-
HK$657,391 HKD
$83,790 USD
View
Retailer 13
-
HK$660,779 HKD
$84,222 USD
View
Price last confirmed 23 days ago
B
Retailer 14
-
HK$664,575 HKD
£66,697 GBP
View
Retailer 15
-
HK$669,073 HKD
$85,279 USD
View
Price last confirmed 22 days ago
B
Retailer 16
-
HK$687,017 HKD
$87,566 USD
View
Retailer 17
-
HK$694,807 HKD
$88,559 USD
View
Price last confirmed 30 days ago
B
Retailer 18
-
HK$729,408 HKD
€88,542 EUR
View
Most Expensive
MOH London
7A1AA332B · Oct 8
HK$973,596 HKD
£97,711 GBP
View
Price last confirmed 22 days ago
18 more retailers have this diamond
Prices start from HK$554,809 HKDSave up to HK$174,599 HKD

Carat Hunter is not affiliated with, endorsed by, or sponsored by any retailer listed. Retailer information is from publicly available sources and may not be current. Verify details directly with the retailer before purchasing. Return terms as we hold them. Check the retailer's own returns page before you buy.

B+
3.99ct Round
HK$554,809 HKD