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Marquise|Natural|GIA

2.50ct H SI2 Marquise Natural Diamond

VG • H/SI2

Diamond specifications and retailer prices

From £16,747 GBP
$22,439 USD
As of October 31, 2026
Save £9,374 GBP (36%) vs most expensive(unlock to see where)
7 retailers carry this diamond
Most expensive: £26,121 GBP at NZ Jewellers · As of October 30, 2026
View at NZ Jewellers

About this 2.5ct natural marquise diamond

This 2.5ct natural marquise sits in the two to three carat band, graded H 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. Listed at 7 retailers as of October 30, 2026, with prices from £16,747 to £26,121, a £9,374 spread on the same certified stone. NZ Jewellers lists it at £26,121. 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
H
Colour
SI2
Clarity
Very Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Very Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
Dimensions12.92 × 6.97 × 4.51 mm
L/W Ratio1.85
Top View
12.92 mm6.97 mm2.50 ctH / SI2
OriginNatural
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA
Side View
Table 62.0%CrownGirdle: MED-VTKPavilionCulet: NoneDepth 64.7%

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: £26,121 GBP|Low: £16,747 GBP|High: £26,121 GBP|Avg: £21,048 GBP
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
October 29, 2026
Retailer 5£16,747 GBP
Retailer 2£18,439 GBP
Retailer 7£19,047 GBP
Retailer 3£19,361 GBP
Retailer 4£19,975 GBP
Retailer 6£20,743 GBP
Retailer 8£23,928 GBP
NZ Jewellers£26,121 GBP

4 data points across 8 retailers

7 retailers£16,747 GBP to £26,121 GBP

B+
Cheapest Retailer
-
£16,747 GBP
$22,439 USD
B+
Retailer 2
-
£18,439 GBP
$24,706 USD
View
B+
Retailer 3
-
£19,047 GBP
$25,521 USD
View
B
Retailer 4
-
£19,361 GBP
$25,941 USD
View
B
Retailer 5
-
£19,975 GBP
$26,764 USD
View
B
Retailer 6
-
£20,743 GBP
$27,794 USD
View
Most Expensive
B
NZ Jewellers
2025d584-02b6-442d-8728-a827ffc7eea6 · Oct 30
£26,121 GBP
$34,999 USD
View
6 more retailers have this diamond
Prices start from £16,747 GBPSave up to £9,374 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
£16,747 GBP