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Marquise|Natural|GIA

2.51ct I SI1 Marquise Natural Diamond

VG • I/SI1 • GIA 6565739246

Certificate GIA 6565739246

Diamond specifications and retailer prices

From €17,224 EUR
SGD 26,106 SGD
As of November 2, 2026
Save €4,911 EUR (22%) vs most expensive(unlock to see where)
8 retailers carry this diamond
Most expensive: €22,134 EUR at Frank Darling · As of November 2, 2026
View at Frank Darling

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 very-good cut grade stated by the retailer rather than the lab and certified by GIA 6565739246. Listed at 8 retailers as of November 2, 2026, with prices from €17,224 to €22,134, a €4,911 spread on the same certified stone. Frank Darling lists it at €22,134. 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
Very Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Very Good
PolishExcellent
SymmetryExcellent
FluorescenceFaint
OriginNatural
Grading LabGIA
CertificateGIA 6565739246
Dimensions12.85 × 6.95 × 4.52 mm
L/W Ratio1.85
Top View
12.85 mm6.95 mm2.51 ctI / SI1
OriginNatural
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 6565739246
Side View
Table 57.0%CrownGirdle: THN-VTKPavilionCulet: NDepth 65.1%

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 2
Current: €22,134 EUR|Low: €17,224 EUR|High: €23,301 EUR|Avg: €19,663 EUR
Frank Darling
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
November 2, 2026
Retailer 8€17,224 EUR
Retailer 6€18,572 EUR
Retailer 3€18,682 EUR
Retailer 4€18,799 EUR
Retailer 5€18,806 EUR
Retailer 2€19,331 EUR
Retailer 7€19,656 EUR
Frank Darling€22,134 EUR

5 data points across 8 retailers

8 retailers€17,224 EUR to €22,134 EUR

A
Cheapest Retailer
-
€17,224 EUR
SGD 26,106 SGD
B+
Retailer 2
-
€18,572 EUR
$20,830 USD
View
A
Retailer 3
-
€18,682 EUR
£16,499 GBP
View
B+
Retailer 4
-
€18,799 EUR
$21,085 USD
View
B+
Retailer 5
-
€18,806 EUR
$21,093 USD
View
B
Retailer 6
-
€19,331 EUR
$21,682 USD
View
B+
Retailer 7
-
€19,656 EUR
$22,046 USD
View
Most Expensive
B+
Frank Darling
260686-1525HK · Nov 2
€22,134 EUR
$24,826 USD
View
7 more retailers have this diamond
Prices start from €17,224 EURSave up to €4,911 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.

A
2.51ct Marquise
€17,224 EUR