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Round|Natural|GIA

0.51ct K SI2 Round Natural Diamond

EX • K/SI2 • GIA 2397005218

Certificate GIA 2397005218

Diamond specifications and retailer prices

From $425 SGD
As of November 5, 2026
Save $1,206 SGD (74%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: $1,631 SGD at NZ Jewellers · As of November 4, 2026
View at NZ Jewellers

About this 0.51ct natural round diamond

This 0.51ct natural round sits in the half to three-quarter carat band, graded K colour (faint-tinted) and SI2 clarity (slightly-included), with a top-tier cut grade and certified by GIA 2397005218. Listed at 11 retailers as of November 4, 2026, with prices from $425 to $1,631, a $1,206 spread on the same certified stone. NZ Jewellers lists it at $1,631. 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
K
Colour
SI2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
Crown angle36.5°
Pavilion angle41°
OriginNatural
Grading LabGIA
CertificateGIA 2397005218
Dimensions5.09 × 5.05 × 3.20 mm
L/W Ratio1.01
Star length50%
Lower girdle80%
Top View
5.09 mm5.05 mm0.51 ctK / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 2397005218
Side View
Table 56.0%Crown 36.5°Girdle: Sli. ThickPavilion 41°Culet: NoneDepth 63.3%

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 5
Current: $1,631 SGD|Low: $425 SGD|High: $1,662 SGD|Avg: $695 SGD|-1.8%
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
November 6, 2026
Retailer 11$425 SGD
Retailer 8$459 SGD
Retailer 3$466 SGD
Retailer 9$474 SGD
Retailer 7$508 SGD
Retailer 2$540 SGD
Retailer 10$572 SGD
Retailer 4$612 SGD
Retailer 12$681 SGD
Retailer 5$787 SGD
Retailer 6$981 SGD
NZ Jewellers$1,631 SGD

44 data points across 12 retailers

11 retailers$425 SGD to $1,631 SGD

A
Cheapest Retailer
-
$425 SGD
Retailer 2
-
$459 SGD
View
Price last confirmed 8 days ago
A
Retailer 3
-
$474 SGD
View
A
Retailer 4
-
$508 SGD
View
A
Retailer 5
-
$540 SGD
View
B+
Retailer 6
-
$572 SGD
View
B+
Retailer 7
-
$612 SGD
View
B+
Retailer 8
-
$681 SGD
View
B+
Retailer 9
-
$787 SGD
View
B+
Retailer 10
-
$981 SGD
View
Most Expensive
C
NZ Jewellers
fef7c7c6-ef8f-4fad-bd92-ac9859a163fb · Nov 4
$1,631 SGD
$1,277 USD
View
10 more retailers have this diamond
Prices start from $425 SGDSave up to $1,206 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
0.51ct Round
$425 SGD