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Marquise|Natural|GIA

2.51ct D SI2 Marquise Natural Diamond

VG • D/SI2 • GIA 6545914908

Certificate GIA 6545914908

Diamond specifications and retailer prices

From $37,688 AUD
£20,797 GBP
As of November 1, 2026
Save $14,919 AUD (28%) vs most expensive(unlock to see where)
6 retailers carry this diamond
Most expensive: $52,607 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 very-good cut grade stated by the retailer rather than the lab and certified by GIA 6545914908. Listed at 6 retailers as of November 1, 2026, with prices from $37,688 to $52,607, a $14,919 spread on the same certified stone. MOH London lists it at $52,607. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

2.51
Carat
D
Colour
SI2
Clarity
Very Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Very Good
PolishExcellent
SymmetryVery Good
FluorescenceFaint
Crown angle32.57°
Pavilion angle41.66°
OriginNatural
Grading LabGIA
CertificateGIA 6545914908
Dimensions13.01 × 7.26 × 4.55 mm
L/W Ratio1.79
Top View
13.01 mm7.26 mm2.51 ctD / SI2
OriginNatural
CutVery Good
PolishExcellent
SymmetryVery Good
FluorescenceFaint
CertificateGIA 6545914908
Side View
Table 65.0%Crown 32.57°Girdle: VTK-ETKPavilion 41.66°Culet: NoneDepth 62.7%

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: $52,607 AUD|Low: $34,853 AUD|High: $53,790 AUD|Avg: $41,952 AUD|-1.2%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
November 1, 2026
Retailer 7$34,853 AUD
Retailer 2$37,688 AUD
Retailer 5$37,732 AUD
Retailer 3$39,040 AUD
Retailer 6$40,280 AUD
Retailer 8$41,369 AUD
Retailer 9$42,291 AUD
Retailer 4$47,720 AUD
MOH London$52,607 AUD

30 data points across 9 retailers

6 retailers$37,688 AUD to $52,607 AUD

A
Cheapest Retailer
-
$37,688 AUD
£20,797 GBP
A
Retailer 2
-
$37,732 AUD
$26,443 USD
View
A
Retailer 3
-
$39,040 AUD
$27,360 USD
View
A
Retailer 4
-
$40,280 AUD
$28,229 USD
View
B+
Retailer 5
-
$47,720 AUD
$33,443 USD
View
Most Expensive
B+
MOH London
F615BD688 · Nov 1
$52,607 AUD
£29,030 GBP
View
5 more retailers have this diamond
Prices start from $37,688 AUDSave up to $14,919 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
$37,688 AUD