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0.51ct I SI2 Round Natural Diamond

EX • I/SI2 • GIA 7426956403

Certificate GIA 7426956403

Diamond specifications and retailer prices

From $1,074 SGD
As of November 4, 2026
Save $1,276 SGD (54%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: $2,351 SGD at MOH London · As of November 4, 2026
View at MOH London

About this 0.51ct natural round diamond

This 0.51ct natural round sits in the half to three-quarter carat band, graded I colour (near-colourless) and SI2 clarity (slightly-included), with a top-tier cut grade and certified by GIA 7426956403. Listed at 12 retailers as of November 4, 2026, with prices from $1,074 to $2,351, a $1,276 spread on the same certified stone. MOH London lists it at $2,351. 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

0.51
Carat
I
Colour
SI2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishVery Good
SymmetryVery Good
FluorescenceNone
Crown angle34°
Pavilion angle41.2°
OriginNatural
Grading LabGIA
CertificateGIA 7426956403
Dimensions5.18 × 5.14 × 3.16 mm
L/W Ratio1.01
Top View
5.18 mm5.14 mm0.51 ctI / SI2
OriginNatural
CutExcellent
PolishVery Good
SymmetryVery Good
FluorescenceNone
CertificateGIA 7426956403
Side View
Table 56.0%Crown 34°Girdle: MediumPavilion 41.2°Culet: NoneDepth 61.3%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 4
Current: $2,351 SGD|Low: $918 SGD|High: $2,383 SGD|Avg: $1,544 SGD|-0.1%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
November 5, 2026
Retailer 6$1,074 SGD
Retailer 5$1,086 SGD
Retailer 4$1,189 SGD
Retailer 7$1,210 SGD
Retailer 3$1,497 SGD
Retailer 2$1,672 SGD
MOH London$2,351 SGD

42 data points across 7 retailers

12 retailers$1,074 SGD to $2,351 SGD

B+
Cheapest Retailer
-
$1,074 SGD
Final sale: no returns
B+
Retailer 2
-
$1,086 SGD
View
B+
Retailer 3
-
$1,189 SGD
View
B+
Retailer 4
-
$1,210 SGD
View
Retailer 5
-
$1,344 SGD
View
Price last confirmed 10 days ago
B
Retailer 6
-
$1,431 SGD
View
B
Retailer 7
-
$1,431 SGD
View
B
Retailer 8
-
$1,482 SGD
View
B
Retailer 9
-
$1,497 SGD
View
B
Retailer 10
-
$1,672 SGD
View
Most Expensive
B
MOH London
F91F95726 · Nov 4
$2,351 SGD
£1,449 GBP
View
10 more retailers have this diamond
Prices start from $1,074 SGDSave up to $1,276 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.

B+
0.51ct Round
$1,074 SGD