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Marquise|Natural|GIA

2.50ct I SI2 Marquise Natural Diamond

GD • I/SI2 • GIA 7556868491

Certificate GIA 7556868491

Diamond specifications and retailer prices

From £12,035 GBP
$16,150 USD
As of October 31, 2026
Save £6,792 GBP (36%) vs most expensive(unlock to see where)
4 retailers carry this diamond
Most expensive: £18,827 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 standard cut grade stated by the retailer rather than the lab and certified by GIA 7556868491. Listed at 4 retailers as of October 31, 2026, with prices from £12,035 to £18,827, a £6,792 spread on the same certified stone. MOH London lists it at £18,827. 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
Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Good
PolishExcellent
SymmetryGood
FluorescenceStrong
Crown angle40.85°
Pavilion angle42.19°
OriginNatural
Grading LabGIA
CertificateGIA 7556868491
Dimensions12.68 × 7.03 × 4.68 mm
L/W Ratio1.80
Girdle conditionExtremely Thick
Key to symbols
Crystal, Knot, Feather, Cavity
Top View
12.68 mm7.03 mm2.50 ctI / SI2
OriginNatural
CutGood
PolishExcellent
SymmetryGood
FluorescenceStrong
CertificateGIA 7556868491
Side View
Table 66.0%Crown 40.85°GirdlePavilion 42.19°CuletDepth 66.5%

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 31
Current: £18,827 GBP|Low: £12,035 GBP|High: £18,928 GBP|Avg: £15,003 GBP|-0.5%
MOH London
Retailer 2
Retailer 3
Retailer 4
November 2, 2026
Retailer 4£12,035 GBP
Retailer 2£14,060 GBP
Retailer 3£14,415 GBP
MOH London£18,827 GBP

15 data points across 4 retailers

4 retailers£12,035 GBP to £18,827 GBP

B+
Cheapest Retailer
-
£12,035 GBP
$16,150 USD
B+
Retailer 2
-
£14,060 GBP
View
B+
Retailer 3
-
£14,415 GBP
$19,344 USD
View
Most Expensive
B
MOH London
A8ED12440 · Nov 1
£18,827 GBP
View
3 more retailers have this diamond
Prices start from £12,035 GBPSave up to £6,792 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
£12,035 GBP