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Marquise|Natural|GIA

2.50ct I SI2 Marquise Natural Diamond

VG • I/SI2 • GIA 2557150329

Certificate GIA 2557150329

Diamond specifications and retailer prices

From £15,162 GBP
$20,315 USD
As of November 1, 2026
Save £11,467 GBP (43%) vs most expensive(unlock to see where)
18 retailers carry this diamond
Most expensive: £26,629 GBP at MOH London · As of November 1, 2026
View at MOH London

About this 2.5ct natural marquise diamond

This 2.5ct natural marquise sits in the two to three carat band, graded I colour (near-colourless) and SI2 clarity (slightly-included), with a very-good cut grade stated by the retailer rather than the lab and certified by GIA 2557150329. Listed at 18 retailers as of November 1, 2026, with prices from £15,162 to £26,629, a £11,467 spread on the same certified stone. MOH London lists it at £26,629. 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

2.50
Carat
I
Colour
SI2
Clarity
Very Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Very Good
PolishExcellent
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 2557150329
Dimensions12.85 × 6.99 × 4.51 mm
L/W Ratio1.84
Culet sizeNone
Top View
12.85 mm6.99 mm2.50 ctI / SI2
OriginNatural
CutVery Good
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 2557150329
Side View
Table 62.0%CrownGirdle: THK-VTKPavilionCulet: NoneDepth 64.5%

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: £26,629 GBP|Low: £15,388 GBP|High: £26,665 GBP|Avg: £19,142 GBP|-0.1%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Retailer 14
Retailer 15
Retailer 16
Retailer 17
November 2, 2026
Retailer 17£15,388 GBP
Retailer 9£15,674 GBP
Retailer 16£17,051 GBP
Retailer 5£17,171 GBP
Retailer 3£17,192 GBP
Retailer 11£17,326 GBP
Retailer 15£17,903 GBP
Retailer 8£18,222 GBP
Retailer 12£18,472 GBP
Retailer 13£19,181 GBP
Retailer 6£19,825 GBP
Retailer 2£19,887 GBP
Retailer 10£20,682 GBP
Retailer 4£20,725 GBP
Retailer 7£21,294 GBP
Retailer 14£24,155 GBP
MOH London£26,629 GBP

11 data points across 17 retailers

18 retailers£15,162 GBP to £26,629 GBP

A
Cheapest Retailer
-
£15,162 GBP
$20,315 USD
A
Retailer 2
-
£15,388 GBP
$20,618 USD
View
B+
Retailer 3
-
£15,674 GBP
$21,002 USD
View
Retailer 4
-
£17,051 GBP
$22,846 USD
View
Price last confirmed 8 days ago
B+
Retailer 5
-
£17,171 GBP
CA$31,954 CAD
View
B+
Retailer 6
-
£17,192 GBP
$23,036 USD
View
B+
Retailer 7
-
£17,326 GBP
View
Retailer 8
-
£17,903 GBP
$23,988 USD
View
Price last confirmed 7 days ago
B+
Retailer 9
-
£18,222 GBP
$24,416 USD
View
B+
Retailer 10
-
£18,472 GBP
$24,750 USD
View
B+
Retailer 11
-
£19,181 GBP
$25,701 USD
View
B
Retailer 12
-
£19,825 GBP
$26,563 USD
View
B
Retailer 13
-
£19,887 GBP
View
B
Retailer 14
-
£20,682 GBP
€26,392 EUR
View
B
Retailer 15
-
£20,725 GBP
$27,770 USD
View
B
Retailer 16
-
£21,294 GBP
$28,531 USD
View
B
Retailer 17
-
£24,155 GBP
$32,365 USD
View
Most Expensive
B
MOH London
18883BEF3 · Nov 1
£26,629 GBP
View
17 more retailers have this diamond
Prices start from £15,162 GBPSave up to £11,467 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
2.50ct Marquise
£15,162 GBP