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Marquise|Natural|GIA

2.51ct D SI2 Marquise Natural Diamond

EX • D/SI2 • GIA 6541372567

Certificate GIA 6541372567

Diamond specifications and retailer prices

From $45,798 AUD
$32,096 USD
As of November 1, 2026
Save $32,765 AUD (42%) vs most expensive(unlock to see where)
22 retailers carry this diamond
Most expensive: $78,563 AUD at MOH London · As of November 1, 2026
View at MOH London

About this 2.51ct natural marquise diamond

This 2.51ct natural marquise sits in the two to three carat band, graded D colour (colourless) and SI2 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 6541372567. Listed at 22 retailers as of November 1, 2026, with prices from $45,798 to $78,563, a $32,765 spread on the same certified stone. MOH London lists it at $78,563. 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

2.51
Carat
D
Colour
SI2
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryVery Good
FluorescenceFaint
Crown angle39.95°
Pavilion angle38.09°
OriginNatural
Grading LabGIA
CertificateGIA 6541372567
Dimensions12.90 × 7.02 × 4.46 mm
L/W Ratio1.84
Top View
12.90 mm7.02 mm2.51 ctD / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceFaint
CertificateGIA 6541372567
Side View
Table 57.0%Crown 39.95°Girdle: Very ThickPavilion 38.09°Culet: NoneDepth 63.6%

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: $78,563 AUD|Low: $40,578 AUD|High: $79,509 AUD|Avg: $53,648 AUD|-1.1%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
November 2, 2026
Retailer 6$46,112 AUD
Retailer 4$47,525 AUD
Retailer 5$48,694 AUD
Retailer 8$49,912 AUD
Retailer 9$50,304 AUD
Retailer 3$50,678 AUD
Retailer 7$52,818 AUD
Retailer 2$59,004 AUD
MOH London$78,563 AUD

40 data points across 9 retailers

22 retailers$45,798 AUD to $78,563 AUD

A
Cheapest Retailer
-
$45,798 AUD
$32,096 USD
A
Retailer 2
-
$46,112 AUD
$32,316 USD
View
Final sale: no returns
B+
Retailer 3
-
$46,747 AUD
$32,761 USD
View
Retailer 4
-
$46,936 AUD
$32,894 USD
View
Price last confirmed 10 days ago
A
Retailer 5
-
$47,525 AUD
₹3,172,015 INR
View
B+
Retailer 6
-
$48,694 AUD
$34,126 USD
View
B+
Retailer 7
-
$49,912 AUD
$34,979 USD
View
B+
Retailer 8
-
$50,304 AUD
$35,254 USD
View
B+
Retailer 9
-
$50,678 AUD
£27,965 GBP
View
B+
Retailer 10
-
$51,038 AUD
$35,768 USD
View
B+
Retailer 11
-
$52,011 AUD
$36,450 USD
View
B+
Retailer 12
-
$52,011 AUD
$36,450 USD
View
B+
Retailer 13
-
$52,399 AUD
$36,722 USD
View
B+
Retailer 14
-
$52,818 AUD
$37,016 USD
View
B+
Retailer 15
-
$53,751 AUD
$37,670 USD
View
B+
Retailer 16
-
$53,790 AUD
$37,697 USD
View
B+
Retailer 17
-
$54,495 AUD
$38,191 USD
View
B+
Retailer 18
-
$56,591 AUD
$39,660 USD
View
Retailer 19
-
$56,591 AUD
$39,660 USD
View
Price last confirmed 57 days ago
B
Retailer 20
-
$59,004 AUD
€39,382 EUR
View
B
Retailer 21
-
$59,367 AUD
$41,605 USD
View
Most Expensive
B
MOH London
9CA0FEE87 · Nov 1
$78,563 AUD
£43,353 GBP
View
21 more retailers have this diamond
Prices start from $45,798 AUDSave up to $32,765 AUD

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
2.51ct Marquise
$45,798 AUD