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2.51ct H SI1 Round Natural Diamond

EX • H/SI1 • GIA 2544271085

Certificate GIA 2544271085

Diamond specifications and retailer prices

From $21,111 SGD
$16,514 USD
As of November 2, 2026
Save $29,065 SGD (58%) vs most expensive(unlock to see where)
17 retailers carry this diamond
Most expensive: $50,176 SGD at MOH London · As of November 1, 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 H colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by GIA 2544271085. Listed at 17 retailers as of November 1, 2026, with prices from $21,111 to $50,176, a $29,065 spread on the same certified stone. MOH London lists it at $50,176. 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
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36°
Pavilion angle40.8°
OriginNatural
Grading LabGIA
CertificateGIA 2544271085
Dimensions8.59 × 8.65 × 5.40 mm
L/W Ratio1.01
Top View
8.59 mm8.65 mm2.51 ctH / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 2544271085
Side View
Table 58.0%Crown 36°Girdle: MED-STKPavilion 40.8°Culet: NoneDepth 62.6%

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: $50,176 SGD|Low: $21,111 SGD|High: $50,782 SGD|Avg: $34,836 SGD|-0.1%
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
November 2, 2026
Retailer 2$21,111 SGD
Retailer 7$22,266 SGD
Retailer 3$27,792 SGD
Retailer 6$29,174 SGD
Retailer 5$30,789 SGD
Retailer 13$32,129 SGD
Retailer 9$32,411 SGD
Retailer 4$32,892 SGD
Retailer 12$34,806 SGD
Retailer 8$35,944 SGD
Retailer 10$38,809 SGD
Retailer 11$44,426 SGD
Retailer 14$45,515 SGD
MOH London$50,176 SGD

32 data points across 14 retailers

17 retailers$21,111 SGD to $50,176 SGD

A
Cheapest Retailer
-
$21,111 SGD
$16,514 USD
A
Retailer 2
-
$22,266 SGD
$17,417 USD
View
B+
Retailer 3
-
$27,792 SGD
$21,740 USD
View
B+
Retailer 4
-
$29,174 SGD
$22,821 USD
View
B+
Retailer 5
-
$29,251 SGD
$22,881 USD
View
B
Retailer 6
-
$30,789 SGD
$24,084 USD
View
Final sale: no returns
B
Retailer 7
-
$31,282 SGD
$24,470 USD
View
B
Retailer 8
-
$32,129 SGD
$25,132 USD
View
B
Retailer 9
-
$32,411 SGD
£19,963 GBP
View
B
Retailer 10
-
$32,892 SGD
$25,729 USD
View
B
Retailer 11
-
$34,341 SGD
$26,863 USD
View
B
Retailer 12
-
$34,806 SGD
$27,226 USD
View
B+
Retailer 13
-
$35,944 SGD
£22,139 GBP
View
B
Retailer 14
-
$38,809 SGD
€28,912 EUR
View
B
Retailer 15
-
$44,426 SGD
ZAR 561,411 ZAR
View
B
Retailer 16
-
$45,515 SGD
$35,603 USD
View
Most Expensive
B
MOH London
374279A59 · Nov 1
$50,176 SGD
£30,905 GBP
View
16 more retailers have this diamond
Prices start from $21,111 SGDSave up to $29,065 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
$21,111 SGD