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Round|Natural|GIA

2.51ct K SI1 Round Natural Diamond

EX • K/SI1 • GIA 6525293492

Certificate GIA 6525293492

Diamond specifications and retailer prices

From $15,973 SGD
As of November 1, 2026
Save $11,421 SGD (42%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: $27,394 SGD at MOH London · As of November 4, 2026
View at MOH London

About this 2.51ct natural round diamond

This 2.51ct natural round sits in the two to three carat band, graded K colour (faint-tinted) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by GIA 6525293492. Listed at 15 retailers as of November 1, 2026, with prices from $15,973 to $27,394, a $11,421 spread on the same certified stone. MOH London lists it at $27,394. 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
K
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceMedium
Crown angle36°
Pavilion angle40.6°
OriginNatural
Grading LabGIA
CertificateGIA 6525293492
Dimensions8.67 × 8.62 × 5.41 mm
L/W Ratio1.01
Star length50%
Lower girdle80%
Top View
8.67 mm8.62 mm2.51 ctK / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceMedium
CertificateGIA 6525293492
Side View
Table 55.0%Crown 36°Girdle: MED-STKPavilion 40.6°Culet: NoneDepth 62.6%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 1
Current: $27,394 SGD|Low: $15,973 SGD|High: $27,798 SGD|Avg: $20,616 SGD|-1.2%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
November 6, 2026
Retailer 6$15,973 SGD
Retailer 7$16,316 SGD
Retailer 4$18,465 SGD
Retailer 8$19,147 SGD
Retailer 2$20,125 SGD
Retailer 5$21,987 SGD
Retailer 3$24,149 SGD
MOH London$27,394 SGD

36 data points across 8 retailers

15 retailers$15,973 SGD to $27,394 SGD

A
Cheapest Retailer
-
$15,973 SGD
A
Retailer 2
-
$16,316 SGD
View
B+
Retailer 3
-
$17,275 SGD
View
Retailer 4
-
$17,587 SGD
View
Price last confirmed 8 days ago
B+
Retailer 5
-
$18,465 SGD
View
B+
Retailer 6
-
$18,760 SGD
View
B+
Retailer 7
-
$19,052 SGD
View
B+
Retailer 8
-
$19,147 SGD
View
B+
Retailer 9
-
$19,227 SGD
View
B+
Retailer 10
-
$19,785 SGD
View
B+
Retailer 11
-
$20,125 SGD
View
B
Retailer 12
-
$21,987 SGD
View
B
Retailer 13
-
$24,149 SGD
View
B
Retailer 14
-
$24,915 SGD
View
Most Expensive
B
MOH London
C28A85AE2 · Nov 4
$27,394 SGD
£16,887 GBP
View
14 more retailers have this diamond
Prices start from $15,973 SGDSave up to $11,421 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 Round
$15,973 SGD