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Marquise|Natural|GIA

2.51ct D SI2 Marquise Natural Diamond

GD • D/SI2 • GIA 1555957217

Certificate GIA 1555957217

Diamond specifications and retailer prices

From £23,954 GBP
$32,096 USD
As of October 30, 2026
Save £17,137 GBP (42%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: £41,092 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), with a standard cut grade stated by the retailer rather than the lab and certified by GIA 1555957217. Listed at 19 retailers as of October 30, 2026, with prices from £23,954 to £41,092, a £17,137 spread on the same certified stone. MOH London lists it at £41,092. 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
Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 1555957217
Dimensions15.46 × 6.77 × 4.23 mm
L/W Ratio2.28
Culet sizeNone
Key to symbols
Crystal, Feather, Needle, Etch Channel, Indented Natural
Top View
15.46 mm6.77 mm2.51 ctD / SI2
OriginNatural
CutGood
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 1555957217
Side View
Table 63.0%CrownGirdle: STK-VTKPavilionCulet: NoneDepth 62.5%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 30
Current: £41,092 GBP|Low: £21,224 GBP|High: £41,586 GBP|Avg: £27,785 GBP|-0.1%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
November 1, 2026
Retailer 10£23,954 GBP
Retailer 9£24,118 GBP
Retailer 4£24,944 GBP
Retailer 7£25,469 GBP
Retailer 3£26,287 GBP
Retailer 6£26,311 GBP
Retailer 8£26,695 GBP
Retailer 2£29,438 GBP
Retailer 5£30,855 GBP
MOH London£41,092 GBP

44 data points across 10 retailers

19 retailers£23,954 GBP to £41,092 GBP

B+
Cheapest Retailer
-
£23,954 GBP
$32,096 USD
B+
Retailer 2
-
£24,118 GBP
$32,315 USD
View
Final sale: no returns
B+
Retailer 3
-
£24,450 GBP
$32,761 USD
View
Retailer 4
-
£24,550 GBP
$32,894 USD
View
Price last confirmed 9 days ago
B+
Retailer 5
-
£24,639 GBP
$33,013 USD
View
B+
Retailer 6
-
£24,944 GBP
₹3,183,059 INR
View
B+
Retailer 7
-
£25,469 GBP
$34,126 USD
View
B+
Retailer 8
-
£26,287 GBP
View
B+
Retailer 9
-
£26,311 GBP
$35,254 USD
View
Retailer 10
-
£26,311 GBP
$35,254 USD
View
Price last confirmed 20 days ago
B+
Retailer 11
-
£26,695 GBP
$35,768 USD
View
Retailer 12
-
£27,407 GBP
$36,722 USD
View
Price last confirmed 33 days ago
Retailer 13
-
£27,626 GBP
$37,016 USD
View
Price last confirmed 31 days ago
B
Retailer 14
-
£28,134 GBP
$37,697 USD
View
Retailer 15
-
£28,503 GBP
$38,191 USD
View
Price last confirmed 24 days ago
B
Retailer 16
-
£29,438 GBP
View
Retailer 17
-
£29,599 GBP
$39,660 USD
View
Price last confirmed 23 days ago
B
Retailer 18
-
£30,855 GBP
€39,374 EUR
View
Most Expensive
B
MOH London
585ECAC27 · Nov 1
£41,092 GBP
View
18 more retailers have this diamond
Prices start from £23,954 GBPSave up to £17,137 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.

B+
2.51ct Marquise
£23,954 GBP