Round|Natural|GIA

4.00ct I SI1 Round Natural Diamond

EX • I/SI1 • GIA 1182031705

Certificate GIA 1182031705

Diamond specifications and retailer prices

From $42,327 USD
As of October 31, 2026
Save $30,854 USD (42%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: $73,181 USD at MOH London · As of November 1, 2026
View at MOH London

About this 4ct natural round diamond

This 4ct natural round sits in the three to five carat band, graded I colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by GIA 1182031705. Listed at 11 retailers as of October 31, 2026, with prices from $42,327 to $73,181, a $30,854 spread on the same certified stone. MOH London lists it at $73,181. 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

4.00
Carat
I
Color
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishVery Good
SymmetryVery Good
FluorescenceFaint
Crown angle35°
Pavilion angle41°
OriginNatural
Grading LabGIA
CertificateGIA 1182031705
Dimensions10.18 × 10.16 × 6.29 mm
L/W Ratio1.00
Culet sizeNone
Top View
10.18 mm10.16 mm4.00 ctI / SI1
OriginNatural
CutExcellent
PolishVery Good
SymmetryVery Good
FluorescenceFaint
CertificateGIA 1182031705
Side View
Table 57.0%Crown 35°Girdle: THN-THKPavilion 41°Culet: NoneDepth 61.8%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 31
Current: $73,181 USD|Low: $40,355 USD|High: $76,923 USD|Avg: $49,652 USD|-4.0%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
November 1, 2026
Retailer 5$40,355 USD
Retailer 10$42,327 USD
Retailer 11$42,793 USD
Retailer 9$42,920 USD
Retailer 8$44,868 USD
Retailer 2$46,879 USD
Retailer 3$48,700 USD
Retailer 6$48,700 USD
Retailer 7$50,320 USD
Retailer 4$55,250 USD
MOH London$73,181 USD

40 data points across 11 retailers

11 retailers$42,327 USD to $73,181 USD

Retailer 1
-
$40,355 USD
Price last confirmed 10 days ago
A
Retailer 2
-
$42,327 USD
View
A
Retailer 3
-
$42,793 USD
View
A
Retailer 4
-
$42,920 USD
View
Retailer 5
-
$44,868 USD
A$69,027 AUD
View
Price last confirmed 28 days ago
B+
Retailer 6
-
$46,879 USD
£36,913 GBP
View
B+
Retailer 7
-
$48,700 USD
View
B+
Retailer 8
-
$48,700 USD
View
B+
Retailer 9
-
$50,320 USD
View
B+
Retailer 10
-
$55,250 USD
€52,619 EUR
View
Most Expensive
B
MOH London
AE8168CD0 · Nov 1
$73,181 USD
£57,623 GBP
View
10 more retailers have this diamond
Prices start from $42,327 USDSave up to $30,854 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.

A
4.00ct Round
$42,327 USD