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Marquise|Natural|GIA

2.51ct I SI1 Marquise Natural Diamond

GD • I/SI1 • GIA 2557879948

Certificate GIA 2557879948

Diamond specifications and retailer prices

From €20,390 EUR
$22,780 USD
As of November 1, 2026
Save €15,910 EUR (44%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: €36,300 EUR at MOH London · As of November 1, 2026
View at MOH London

About this 2.51ct natural marquise diamond

This 2.51ct natural marquise sits in the two to three carat band, graded I colour (near-colourless) and SI1 clarity (slightly-included), with a standard cut grade stated by the retailer rather than the lab and certified by GIA 2557879948. Listed at 15 retailers as of November 1, 2026, with prices from €20,390 to €36,300, a €15,910 spread on the same certified stone. MOH London lists it at €36,300. 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
I
Color
SI1
Clarity
Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Good
PolishExcellent
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 2557879948
Dimensions14.79 × 6.91 × 3.75 mm
L/W Ratio2.14
Girdle conditionFaceted
Culet sizeNone
Key to symbols
Cloud, Feather, Indented Natural, Crystal, Cavity, Needle, Natural
Top View
14.79 mm6.91 mm2.51 ctI / SI1
OriginNatural
CutGood
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 2557879948
Side View
Table 61.0%CrownGirdle: STK-VTKPavilionCulet: NoneDepth 54.3%

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: Nov 1
Current: €36,300 EUR|Low: €20,390 EUR|High: €36,738 EUR|Avg: €25,676 EUR|-1.2%
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 14€20,390 EUR
Retailer 5€21,096 EUR
Retailer 16€21,162 EUR
Retailer 4€22,274 EUR
Retailer 17€23,243 EUR
Retailer 11€23,437 EUR
Retailer 10€23,466 EUR
Retailer 3€23,786 EUR
Retailer 6€23,893 EUR
Retailer 18€24,211 EUR
Retailer 15€24,406 EUR
Retailer 8€26,148 EUR
Retailer 2€26,744 EUR
Retailer 7€27,939 EUR
Retailer 13€28,202 EUR
Retailer 9€30,580 EUR
Retailer 12€32,140 EUR
MOH London€36,300 EUR

23 data points across 18 retailers

15 retailers€20,390 EUR to €36,300 EUR

B+
Cheapest Retailer
-
€20,390 EUR
$22,780 USD
B+
Retailer 2
-
€21,096 EUR
$23,569 USD
View
B+
Retailer 3
-
€21,162 EUR
$23,642 USD
View
B+
Retailer 4
-
€22,274 EUR
$24,885 USD
View
Final sale: no returns
B
Retailer 5
-
€23,243 EUR
$25,967 USD
View
B+
Retailer 6
-
€23,437 EUR
£20,617 GBP
View
B
Retailer 7
-
€23,786 EUR
$26,574 USD
View
B
Retailer 8
-
€23,893 EUR
$26,693 USD
View
B
Retailer 9
-
€24,211 EUR
$27,049 USD
View
B
Retailer 10
-
€24,406 EUR
$27,266 USD
View
B
Retailer 11
-
€26,148 EUR
$29,213 USD
View
B
Retailer 12
-
€26,744 EUR
£23,526 GBP
View
B
Retailer 13
-
€28,202 EUR
View
B
Retailer 14
-
€32,140 EUR
ZAR 580,081 ZAR
View
Most Expensive
C
MOH London
2CC952645 · Nov 1
€36,300 EUR
£31,933 GBP
View
14 more retailers have this diamond
Prices start from €20,390 EURSave up to €15,910 EUR

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+
2.51ct Marquise
€20,390 EUR