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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 $24,706 SGD
As of November 2, 2026
Save $21,422 SGD (46%) vs most expensive(unlock to see where)
9 retailers carry this diamond
Most expensive: $46,129 SGD at With Clarity · As of November 2, 2026
View at With Clarity

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 9 retailers as of November 2, 2026, with prices from $24,706 to $46,129, a $21,422 spread on the same certified stone. With Clarity lists it at $46,129. 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
Colour
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: $26,797 SGD|Low: $24,706 SGD|High: $46,129 SGD|Avg: $28,919 SGD|+0.0%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
With Clarity
November 3, 2026
Retailer 8$24,706 SGD
Retailer 5$26,639 SGD
Retailer 1$26,797 SGD
Retailer 3$26,966 SGD
Retailer 4$26,976 SGD
Retailer 2$27,729 SGD
Retailer 6$28,195 SGD
Retailer 7$31,750 SGD
With Clarity$46,129 SGD

6 data points across 9 retailers

9 retailers$24,706 SGD to $46,129 SGD

A
Cheapest Retailer
-
$24,706 SGD
B+
Retailer 2
-
$26,639 SGD
$20,830 USD
View
A
Retailer 3
-
$26,797 SGD
£16,499 GBP
View
B+
Retailer 4
-
$26,966 SGD
$21,085 USD
View
B+
Retailer 5
-
$26,976 SGD
$21,093 USD
View
A
Retailer 6
-
$27,729 SGD
$21,682 USD
View
B+
Retailer 7
-
$28,195 SGD
$22,046 USD
View
B+
Retailer 8
-
$31,750 SGD
$24,826 USD
View
Most Expensive
B
With Clarity
6565739246 · Nov 2
$46,129 SGD
$36,069 USD
View
8 more retailers have this diamond
Prices start from $24,706 SGDSave up to $21,422 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
$24,706 SGD