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Round|Natural|GIA

0.50ct K SI1 Round Natural Diamond

EX • K/SI1 • GIA 6505375298

Certificate GIA 6505375298

Diamond specifications and retailer prices

From $525 SGD
As of November 5, 2026
Save $1,722 SGD (77%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: $2,247 SGD at NZ Jewellers · As of November 4, 2026
View at NZ Jewellers

About this 0.5ct natural round diamond

This 0.5ct natural round sits in the half to three-quarter carat band, graded K colour (faint-tinted) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by GIA 6505375298. Listed at 19 retailers as of November 4, 2026, with prices from $525 to $2,247, a $1,722 spread on the same certified stone. NZ Jewellers lists it at $2,247. 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

0.50
Carat
K
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
Crown angle35°
Pavilion angle41.4°
OriginNatural
Grading LabGIA
CertificateGIA 6505375298
Dimensions5.08 × 5.06 × 3.17 mm
L/W Ratio1.00
Star length50%
Lower girdle80%
Top View
5.08 mm5.06 mm0.50 ctK / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 6505375298
Side View
Table 57.0%Crown 35°Girdle: THN-STKPavilion 41.4°Culet: NoneDepth 62.5%

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: $2,247 SGD|Low: $525 SGD|High: $2,247 SGD|Avg: $1,139 SGD
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
November 6, 2026
Retailer 3$525 SGD
Retailer 7$722 SGD
Retailer 2$746 SGD
Retailer 5$865 SGD
Retailer 4$958 SGD
Retailer 9$964 SGD
Retailer 6$1,105 SGD
Retailer 8$1,653 SGD
NZ Jewellers$2,247 SGD

38 data points across 9 retailers

19 retailers$525 SGD to $2,247 SGD

A
Cheapest Retailer
-
$525 SGD
B+
Retailer 2
-
$678 SGD
View
B+
Retailer 3
-
$717 SGD
View
Retailer 4
-
$717 SGD
View
Price last confirmed 43 days ago
B+
Retailer 5
-
$722 SGD
View
B+
Retailer 6
-
$746 SGD
View
Retailer 7
-
$771 SGD
View
Price last confirmed 8 days ago
B+
Retailer 8
-
$771 SGD
View
B+
Retailer 9
-
$826 SGD
View
Retailer 10
-
$826 SGD
View
Price last confirmed 45 days ago
B+
Retailer 11
-
$865 SGD
View
B
Retailer 12
-
$884 SGD
View
B
Retailer 13
-
$940 SGD
View
B+
Retailer 14
-
$958 SGD
View
B
Retailer 15
-
$964 SGD
View
B
Retailer 16
-
$1,105 SGD
View
B
Retailer 17
-
$1,653 SGD
View
Retailer 18
-
$2,247 SGD
View
Price last confirmed 43 days ago
Most Expensive
B
NZ Jewellers
405abf71-43c0-4f79-85d8-3369ef7c483a · Nov 4
$2,247 SGD
$1,759 USD
View
18 more retailers have this diamond
Prices start from $525 SGDSave up to $1,722 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
0.50ct Round
$525 SGD