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Round|Natural|GIA

3.99ct E SI2 Round Natural Diamond

EX • E/SI2 • GIA 6221251339

Certificate GIA 6221251339

Diamond specifications and retailer prices

From $90,635 SGD
$70,715 USD
As of October 29, 2026
Save $28,523 SGD (24%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: $159,050 SGD 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: $159,050 SGD|Low: $89,788 SGD|High: $159,472 SGD|Avg: $107,967 SGD|-0.1%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
October 29, 2026
Retailer 5$91,094 SGD
Retailer 4$91,724 SGD
Retailer 8$92,486 SGD
Retailer 7$96,038 SGD
Retailer 9$107,947 SGD
Retailer 3$108,237 SGD
Retailer 6$112,233 SGD
Retailer 2$119,158 SGD
MOH London$159,050 SGD

37 data points across 9 retailers

19 retailers$90,635 SGD to $119,158 SGD

B+
Cheapest Retailer
-
$90,635 SGD
$70,715 USD
B+
Retailer 2
-
$91,094 SGD
$71,073 USD
View
B+
Retailer 3
-
$91,434 SGD
$71,338 USD
View
Price last confirmed 24 days ago
B+
Retailer 4
-
$91,724 SGD
₹6,815,644 INR
View
B+
Retailer 5
-
$95,501 SGD
$74,511 USD
View
B+
Retailer 6
-
$96,038 SGD
$74,930 USD
View
B+
Retailer 7
-
$100,894 SGD
$78,719 USD
View
Price last confirmed 21 days ago
B
Retailer 8
-
$103,933 SGD
$81,090 USD
View
B
Retailer 9
-
$103,933 SGD
$81,090 USD
View
B
Retailer 10
-
$105,098 SGD
$81,999 USD
View
Price last confirmed 32 days ago
B
Retailer 11
-
$105,098 SGD
$81,999 USD
View
Price last confirmed 30 days ago
B
Retailer 12
-
$107,394 SGD
$83,790 USD
View
B
Retailer 13
-
$107,947 SGD
$84,222 USD
View
Price last confirmed 22 days ago
B
Retailer 14
-
$108,237 SGD
£66,495 GBP
View
B
Retailer 15
-
$109,302 SGD
$85,279 USD
View
Price last confirmed 21 days ago
B
Retailer 16
-
$112,233 SGD
$87,566 USD
View
B
Retailer 17
-
$113,506 SGD
$88,559 USD
View
Price last confirmed 30 days ago
B
Retailer 18
-
$119,158 SGD
€88,542 EUR
View
Most Expensive
B
MOH London
7A1AA332B · Oct 8
$159,050 SGD
£97,711 GBP
View
Price last confirmed 21 days ago
18 more retailers have this diamond
Prices start from $90,635 SGDSave up to $28,523 SGD

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
$90,635 SGD