Round|Natural|GIA

3.99ct E SI2 Round Natural Diamond

EX • E/SI2 • GIA 6221251339

Certificate GIA 6221251339

Diamond specifications and retailer prices

From $70,715 USD
As of October 27, 2026
Save $21,507 USD (23%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: $124,093 USD 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 27, 2026, with a 30% 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
Color
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 27
Current: $124,093 USD|Low: $70,054 USD|High: $124,422 USD|Avg: $84,188 USD|-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$71,073 USD
Retailer 3$71,564 USD
Retailer 8$72,159 USD
Retailer 7$74,930 USD
Retailer 9$84,222 USD
Retailer 2$84,448 USD
Retailer 6$87,566 USD
Retailer 4$92,222 USD
MOH London$124,093 USD

37 data points across 9 retailers

19 retailers$70,715 USD to $92,222 USD

B+
Cheapest Retailer
-
$70,715 USD
B+
Retailer 2
-
$71,073 USD
View
B+
Retailer 3
-
$71,338 USD
View
Price last confirmed 23 days ago
B+
Retailer 4
-
$71,564 USD
₹6,815,644 INR
View
B+
Retailer 5
-
$74,511 USD
View
B+
Retailer 6
-
$74,930 USD
View
B+
Retailer 7
-
$78,719 USD
View
Price last confirmed 21 days ago
B
Retailer 8
-
$81,090 USD
View
B
Retailer 9
-
$81,090 USD
View
B
Retailer 10
-
$81,999 USD
View
Price last confirmed 32 days ago
B
Retailer 11
-
$81,999 USD
View
Price last confirmed 29 days ago
B
Retailer 12
-
$83,790 USD
View
B
Retailer 13
-
$84,222 USD
View
Price last confirmed 22 days ago
B
Retailer 14
-
$84,448 USD
£66,495 GBP
View
B
Retailer 15
-
$85,279 USD
View
Price last confirmed 21 days ago
B
Retailer 16
-
$87,566 USD
View
B
Retailer 17
-
$88,559 USD
View
Price last confirmed 29 days ago
B
Retailer 18
-
$92,222 USD
€87,830 EUR
View
Most Expensive
B
MOH London
7A1AA332B · Oct 8
$124,093 USD
£97,711 GBP
View
Price last confirmed 21 days ago
18 more retailers have this diamond
Prices start from $70,715 USDSave up to $21,507 USD

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
$70,715 USD