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Marquise|Natural|GIA

2.50ct H SI2 Marquise Natural Diamond

VG • H/SI2 • GIA 6551868509

Certificate GIA 6551868509

Diamond specifications and retailer prices

From £16,203 GBP
$21,710 USD
As of November 1, 2026
Save £12,593 GBP (44%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: £28,796 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 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 6551868509. Listed at 16 retailers as of November 1, 2026, with prices from £16,203 to £28,796, a £12,593 spread on the same certified stone. MOH London lists it at £28,796. 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
Crown angle40.76°
Pavilion angle39.97°
OriginNatural
Grading LabGIA
CertificateGIA 6551868509
Dimensions12.92 × 6.97 × 4.51 mm
L/W Ratio1.85
Culet sizeNone
Top View
12.92 mm6.97 mm2.50 ctH / SI2
OriginNatural
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 6551868509
Side View
Table 62.0%Crown 40.76°Girdle: MED-VTKPavilion 39.97°Culet: NoneDepth 64.6%

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: £28,796 GBP|Low: £12,124 GBP|High: £29,143 GBP|Avg: £19,735 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
Retailer 18
November 1, 2026
Retailer 9£12,124 GBP
Retailer 8£14,847 GBP
Retailer 13£16,203 GBP
Retailer 18£16,787 GBP
Retailer 14£18,439 GBP
Retailer 11£18,588 GBP
Retailer 15£18,592 GBP
Retailer 10£19,076 GBP
Retailer 4£19,636 GBP
Retailer 5£19,636 GBP
Retailer 17£19,975 GBP
Retailer 6£20,293 GBP
Retailer 3£20,743 GBP
Retailer 2£21,215 GBP
Retailer 12£21,513 GBP
Retailer 7£21,780 GBP
Retailer 16£26,121 GBP
MOH London£28,796 GBP

31 data points across 18 retailers

16 retailers£16,203 GBP to £28,796 GBP

A
Cheapest Retailer
-
£16,203 GBP
$21,710 USD
B+
Retailer 2
-
£16,787 GBP
$22,493 USD
View
Retailer 3
-
£18,439 GBP
$24,706 USD
View
Price last confirmed 21 days ago
B+
Retailer 4
-
£18,588 GBP
View
B+
Retailer 5
-
£18,592 GBP
$24,911 USD
View
B+
Retailer 6
-
£18,857 GBP
$25,266 USD
View
Retailer 7
-
£19,361 GBP
$25,941 USD
View
Price last confirmed 32 days ago
B+
Retailer 8
-
£19,636 GBP
$26,310 USD
View
B+
Retailer 9
-
£19,636 GBP
$26,310 USD
View
Retailer 10
-
£19,975 GBP
$26,764 USD
View
Price last confirmed 25 days ago
B
Retailer 11
-
£20,293 GBP
$27,190 USD
View
Retailer 12
-
£20,743 GBP
$27,794 USD
View
Price last confirmed 23 days ago
B
Retailer 13
-
£21,215 GBP
View
B
Retailer 14
-
£21,513 GBP
€27,452 EUR
View
Retailer 15
-
£26,121 GBP
$34,999 USD
View
Price last confirmed 32 days ago
Most Expensive
B
MOH London
BD43AE796 · Nov 1
£28,796 GBP
View
15 more retailers have this diamond
Prices start from £16,203 GBPSave up to £12,593 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
£16,203 GBP