Round|Natural|GIA

3.99ct E SI2 Round Natural Diamond

EX • E/SI2 • GIA 6221251339

Certificate GIA 6221251339

Diamond specifications and retailer prices

From $125,908 NZD
$70,715 USD
As of October 29, 2026
Save $39,623 NZD (24%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: $220,948 NZD 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: $220,948 NZD|Low: $124,731 NZD|High: $221,533 NZD|Avg: $150,142 NZD|-0.1%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
October 30, 2026
Retailer 5$126,545 NZD
Retailer 2$127,323 NZD
Retailer 8$128,479 NZD
Retailer 7$133,413 NZD
Retailer 9$149,957 NZD
Retailer 3$150,818 NZD
Retailer 6$155,911 NZD
Retailer 4$165,531 NZD
MOH London$220,948 NZD

37 data points across 9 retailers

19 retailers$125,908 NZD to $165,531 NZD

B+
Cheapest Retailer
-
$125,908 NZD
$70,715 USD
B+
Retailer 2
-
$126,545 NZD
$71,073 USD
View
Retailer 3
-
$127,017 NZD
$71,338 USD
View
Price last confirmed 24 days ago
B+
Retailer 4
-
$127,323 NZD
₹6,810,465 INR
View
B+
Retailer 5
-
$132,667 NZD
$74,511 USD
View
B+
Retailer 6
-
$133,413 NZD
$74,930 USD
View
Retailer 7
-
$140,159 NZD
$78,719 USD
View
Price last confirmed 22 days ago
B
Retailer 8
-
$144,381 NZD
$81,090 USD
View
B
Retailer 9
-
$144,381 NZD
$81,090 USD
View
Retailer 10
-
$145,999 NZD
$81,999 USD
View
Price last confirmed 33 days ago
Retailer 11
-
$145,999 NZD
$81,999 USD
View
Price last confirmed 30 days ago
B
Retailer 12
-
$149,188 NZD
$83,790 USD
View
Retailer 13
-
$149,957 NZD
$84,222 USD
View
Price last confirmed 23 days ago
B
Retailer 14
-
$150,818 NZD
£66,697 GBP
View
Retailer 15
-
$151,839 NZD
$85,279 USD
View
Price last confirmed 22 days ago
B
Retailer 16
-
$155,911 NZD
$87,566 USD
View
Retailer 17
-
$157,679 NZD
$88,559 USD
View
Price last confirmed 30 days ago
B
Retailer 18
-
$165,531 NZD
€88,542 EUR
View
Most Expensive
MOH London
7A1AA332B · Oct 8
$220,948 NZD
£97,711 GBP
View
Price last confirmed 22 days ago
18 more retailers have this diamond
Prices start from $125,908 NZDSave up to $39,623 NZD

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
$125,908 NZD