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Marquise|Natural|GIA

2.51ct D SI2 Marquise Natural Diamond

D/SI2 • GIA 2557627661

Certificate GIA 2557627661

Diamond specifications and retailer prices

From £17,729 GBP
As of November 1, 2026
Save £7,018 GBP (28%) vs most expensive(unlock to see where)
5 retailers carry this diamond
Most expensive: £24,747 GBP 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) and certified by GIA 2557627661. Listed at 5 retailers as of November 1, 2026, with prices from £17,729 to £24,747, a £7,018 spread on the same certified stone. MOH London lists it at £24,747. 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
-
Cut

Specifications

Cut
PolishVery Good
SymmetryVery Good
FluorescenceVery Strong
Crown angle34.47°
Pavilion angle41.82°
OriginNatural
Grading LabGIA
CertificateGIA 2557627661
Dimensions13.67 × 7.12 × 4.39 mm
L/W Ratio1.92
Girdle conditionVery Thick
Key to symbols
Crystal, Feather, Cavity
Top View
13.67 mm7.12 mm2.51 ctD / SI2
OriginNatural
PolishVery Good
SymmetryVery Good
FluorescenceVery Strong
CertificateGIA 2557627661
Side View
Table 66.0%Crown 34.47°GirdlePavilion 41.82°CuletDepth 61.7%

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: £24,747 GBP|Low: £17,729 GBP|High: £25,706 GBP|Avg: £20,994 GBP|-2.7%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
November 1, 2026
Retailer 2£17,729 GBP
Retailer 3£18,365 GBP
Retailer 5£18,948 GBP
Retailer 4£22,447 GBP
MOH London£24,747 GBP

29 data points across 5 retailers

5 retailers£17,729 GBP to £24,747 GBP

A
Cheapest Retailer
-
£17,729 GBP
B+
Retailer 2
-
£18,365 GBP
$24,607 USD
View
B+
Retailer 3
-
£18,948 GBP
$25,388 USD
View
B+
Retailer 4
-
£22,447 GBP
$30,077 USD
View
Most Expensive
B+
MOH London
8C5775EDA · Nov 1
£24,747 GBP
View
4 more retailers have this diamond
Prices start from £17,729 GBPSave up to £7,018 GBP

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
£17,729 GBP