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Marquise|Natural|GIA

2.51ct H SI2 Marquise Natural Diamond

ID • H/SI2 • GIA 6562556595

Certificate GIA 6562556595

Diamond specifications and retailer prices

From $23,455 SGD
$18,340 USD
As of November 2, 2026
Save $13,578 SGD (37%) vs most expensive(unlock to see where)
6 retailers carry this diamond
Most expensive: $37,033 SGD 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 H colour (near-colourless) and SI2 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 6562556595. Listed at 6 retailers as of November 1, 2026, with prices from $23,455 to $37,033, a $13,578 spread on the same certified stone. MOH London lists it at $37,033. 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

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

Specifications

Cut (retailer stated)Ideal
PolishExcellent
SymmetryExcellent
FluorescenceStrong
Crown angle43.13°
Pavilion angle41.36°
OriginNatural
Grading LabGIA
CertificateGIA 6562556595
Dimensions12.60 × 7.00 × 4.70 mm
L/W Ratio1.80
Girdle conditionExtremely Thick
Key to symbols
Twinning Wisp, Feather, Crystal, Indented Natural, Needle
Top View
12.60 mm7.00 mm2.51 ctH / SI2
OriginNatural
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceStrong
CertificateGIA 6562556595
Side View
Table 65.0%Crown 43.13°GirdlePavilion 41.36°CuletDepth 67.1%

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: $37,033 SGD|Low: $23,455 SGD|High: $38,978 SGD|Avg: $30,148 SGD|-5.0%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
November 2, 2026
Retailer 4$23,455 SGD
Retailer 2$27,282 SGD
Retailer 5$27,484 SGD
Retailer 6$28,356 SGD
Retailer 3$33,593 SGD
MOH London$37,033 SGD

22 data points across 6 retailers

6 retailers$23,455 SGD to $37,033 SGD

A
Cheapest Retailer
-
$23,455 SGD
$18,340 USD
A
Retailer 2
-
$27,282 SGD
£16,797 GBP
View
A
Retailer 3
-
$27,484 SGD
$21,490 USD
View
B+
Retailer 4
-
$28,356 SGD
$22,172 USD
View
B+
Retailer 5
-
$33,593 SGD
$26,267 USD
View
Most Expensive
B
MOH London
720699669 · Nov 1
$37,033 SGD
£22,801 GBP
View
5 more retailers have this diamond
Prices start from $23,455 SGDSave up to $13,578 SGD

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
$23,455 SGD