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Marquise|Natural|GIA

2.51ct H SI2 Marquise Natural Diamond

GD • H/SI2 • GIA 2567552558

Certificate GIA 2567552558

Diamond specifications and retailer prices

From £17,285 GBP
$23,160 USD
As of October 31, 2026
1 retailer carries this diamond
Only listing: £17,285 GBP at Brilliant Earth
Only one retailer lists this diamond right now, and it is shown above, so there is nothing to unlock. Similar diamonds are carried by several retailers.
View at Brilliant Earth

About this 2.51ct natural marquise diamond

This 2.51ct natural marquise sits in the two to three carat band, graded H 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 2567552558. Listed at a single retailer as of October 31, 2026. If it later appears at another store, Carat Hunter will surface the price comparison automatically. 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

2.51
Carat
H
Colour
SI2
Clarity
Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Good
PolishVery Good
SymmetryVery Good
FluorescenceMedium
OriginNatural
Grading LabGIA
CertificateGIA 2567552558
Dimensions14.20 × 7.22 × 4.02 mm
L/W Ratio1.97
Top View
14.20 mm7.22 mm2.51 ctH / SI2
OriginNatural
CutGood
PolishVery Good
SymmetryVery Good
FluorescenceMedium
CertificateGIA 2567552558
Side View
Table 60.0%CrownGirdle: ThickPavilionCulet: NoneDepth 55.6%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
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Price History

Last verified: Oct 31
Current: £17,285 GBP|Low: £17,285 GBP|High: £17,949 GBP|Avg: £17,604 GBP|-3.7%
October 29, 2026
Brilliant Earth£17,285 GBP

4 data points across 1 retailer

1 retailer

B+
Brilliant Earth
21770661A · Oct 31
£17,285 GBP
$23,160 USD
View

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B+
2.51ct Marquise
£17,285 GBP