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Marquise|Natural|GIA

2.50ct L SI2 Marquise Natural Diamond

EX • L/SI2 • GIA 5556721257

Certificate GIA 5556721257

Diamond specifications and retailer prices

From £5,905 GBP
As of November 6, 2026
Save £2,453 GBP (29%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: £11,118 GBP at NZ Jewellers · As of October 17, 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 L colour (faint-tinted) and SI2 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 5556721257. Listed at 10 retailers as of November 6, 2026, with a 42% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. SI-grade stones are eye-clean roughly 60 to 70% of the time at this carat range. Check the inclusion plot on the cert and ask the retailer for high-resolution video before buying.

The 4Cs

2.50
Carat
L
Colour
SI2
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryVery Good
FluorescenceMedium
OriginNatural
Grading LabGIA
CertificateGIA 5556721257
Dimensions13.63 × 7.14 × 4.30 mm
L/W Ratio1.91
Girdle conditionFaceted
Culet sizeNone
Key to symbols
Twinning Wisp, Crystal, Feather, Knot
Top View
13.63 mm7.14 mm2.50 ctL / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceMedium
CertificateGIA 5556721257
Side View
Table 59.0%CrownGirdle: STK-THKPavilionCulet: NoneDepth 60.2%

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 6
Current: £11,118 GBP|Low: £5,905 GBP|High: £11,118 GBP|Avg: £8,038 GBP
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
November 6, 2026
Retailer 7£5,905 GBP
Retailer 2£5,968 GBP
Retailer 6£7,225 GBP
Retailer 10£7,363 GBP
Retailer 4£7,949 GBP
Retailer 11£7,977 GBP
Retailer 8£8,099 GBP
Retailer 5£8,358 GBP
Retailer 9£9,204 GBP
Retailer 3£9,443 GBP
NZ Jewellers£11,118 GBP

23 data points across 11 retailers

10 retailers£5,905 GBP to £8,358 GBP

B+
Cheapest Retailer
-
£5,905 GBP
A
Retailer 2
-
£5,968 GBP
View
B+
Retailer 3
-
£7,225 GBP
View
Retailer 4
-
£7,363 GBP
View
Price last confirmed 21 days ago
B+
Retailer 5
-
£7,949 GBP
View
Retailer 6
-
£7,977 GBP
View
Price last confirmed 19 days ago
Retailer 7
-
£8,099 GBP
View
Price last confirmed 21 days ago
B+
Retailer 8
-
£8,358 GBP
View
Retailer 9
-
£9,204 GBP
View
Price last confirmed 18 days ago
Most Expensive
NZ Jewellers
1d6e76a8-2eaf-4f36-8e29-4a12e2698fb3 · Oct 17
£11,118 GBP
$14,964 USD
View
Price last confirmed 19 days ago
9 more retailers have this diamond
Prices start from £5,905 GBPSave up to £2,453 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
£5,905 GBP