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Marquise|Natural|GIA

2.50ct I SI2 Marquise Natural Diamond

VG • I/SI2 • GIA 7538779910

Certificate GIA 7538779910

Diamond specifications and retailer prices

From £17,072 GBP
As of November 2, 2026
Save £361 GBP (2%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: £23,740 GBP at MOH London · As of October 11, 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 7538779910. Listed at 10 retailers as of November 1, 2026, with a relatively tight 2% spread, which is unusual at this carat range and suggests competitive pricing across the listings. 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 7538779910
Dimensions13.17 × 6.94 × 4.42 mm
L/W Ratio1.90
Top View
13.17 mm6.94 mm2.50 ctI / SI2
OriginNatural
CutVery Good
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 7538779910
Side View
Table 63.0%CrownGirdle: Very ThickPavilionCulet: NoneDepth 63.7%

Caratlytics Score

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

Price History

Last verified: Nov 2
Current: £23,740 GBP|Low: £9,491 GBP|High: £23,740 GBP|Avg: £16,742 GBP
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
November 2, 2026
Retailer 6£9,491 GBP
Retailer 5£12,729 GBP
Retailer 12£13,808 GBP
Retailer 10£15,019 GBP
Retailer 3£16,048 GBP
Retailer 11£16,271 GBP
Retailer 14£16,897 GBP
Retailer 2£17,072 GBP
Retailer 7£17,434 GBP
Retailer 9£17,723 GBP
Retailer 8£18,146 GBP
Retailer 13£21,277 GBP
Retailer 4£21,794 GBP
MOH London£23,740 GBP

31 data points across 14 retailers

10 retailers£17,072 GBP to £17,434 GBP

Retailer 1
-
£13,808 GBP
$18,501 USD
Price last confirmed 10 days ago
Retailer 2
-
£15,019 GBP
$20,124 USD
View
Price last confirmed 21 days ago
Retailer 3
-
£16,048 GBP
$21,503 USD
View
Price last confirmed 22 days ago
Retailer 4
-
£16,271 GBP
$21,801 USD
View
Price last confirmed 10 days ago
Retailer 5
-
£16,897 GBP
$22,640 USD
View
Price last confirmed 24 days ago
B+
Retailer 6
-
£17,072 GBP
View
B+
Retailer 7
-
£17,434 GBP
$23,359 USD
View
Retailer 8
-
£17,723 GBP
View
Price last confirmed 21 days ago
Retailer 9
-
£21,277 GBP
$28,509 USD
View
Price last confirmed 24 days ago
Most Expensive
MOH London
700F604F3 · Oct 11
£23,740 GBP
View
Price last confirmed 22 days ago
9 more retailers have this diamond
Prices start from £17,072 GBPSave up to £361 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+
2.50ct Marquise
£17,072 GBP