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Marquise|Natural|GIA

4.00ct I SI2 Marquise Natural Diamond

EX • I/SI2 • GIA 6555771061

Certificate GIA 6555771061

Diamond specifications and retailer prices

From $41,971 USD
HK$327,900 HKD
As of November 1, 2026
Save $33,714 USD (45%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: $75,686 USD at MOH London · As of November 2, 2026
View at MOH London

About this 4ct natural marquise diamond

This 4ct natural marquise sits in the three to five carat band, graded I colour (near-colourless) and SI2 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 6555771061. Listed at 14 retailers as of November 1, 2026, with prices from $41,971 to $75,686, a $33,714 spread on the same certified stone. MOH London lists it at $75,686. 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
SI2
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryVery Good
FluorescenceFaint
OriginNatural
Grading LabGIA
CertificateGIA 6555771061
Dimensions15.58 × 8.35 × 5.21 mm
L/W Ratio1.87
Culet sizeNone
Key to symbols
Crystal, Feather, Needle, Cavity, Indented Natural
Top View
15.58 mm8.35 mm4.00 ctI / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceFaint
CertificateGIA 6555771061
Side View
Table 61.0%CrownGirdle: MED-XTKPavilionCulet: NoneDepth 62.4%

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: Nov 1
Current: $75,686 USD|Low: $41,971 USD|High: $81,229 USD|Avg: $54,181 USD|-6.6%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
November 3, 2026
Retailer 6$41,971 USD
Retailer 2$44,840 USD
Retailer 7$48,961 USD
Retailer 8$49,034 USD
Retailer 3$49,356 USD
Retailer 4$53,064 USD
Retailer 5$58,783 USD
MOH London$75,686 USD

35 data points across 8 retailers

14 retailers$41,971 USD to $75,686 USD

A
Cheapest Retailer
-
$41,971 USD
HK$327,900 HKD
A
Retailer 2
-
$44,840 USD
₹4,270,502 INR
View
B+
Retailer 3
-
$48,961 USD
View
B+
Retailer 4
-
$49,034 USD
View
Final sale: no returns
Retailer 5
-
$49,081 USD
SGD 66,326 SGD
View
Price last confirmed 24 days ago
B+
Retailer 6
-
$49,356 USD
£38,863 GBP
View
B+
Retailer 7
-
$49,423 USD
A$76,036 AUD
View
B+
Retailer 8
-
$53,064 USD
£41,782 GBP
View
Retailer 9
-
$53,533 USD
View
Price last confirmed 33 days ago
B+
Retailer 10
-
$58,783 USD
€55,984 EUR
View
Retailer 11
-
$59,091 USD
View
Price last confirmed 33 days ago
Retailer 12
-
$61,454 USD
View
Price last confirmed 26 days ago
Retailer 13
-
$63,818 USD
View
Price last confirmed 25 days ago
Most Expensive
B
MOH London
B579C545B · Nov 2
$75,686 USD
£59,595 GBP
View
13 more retailers have this diamond
Prices start from $41,971 USDSave up to $33,714 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 Marquise
$41,971 USD