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1.39ct K SI1 Round Natural Diamond

EX • K/SI1 • GIA 5513024356

Shape and cutting style on the report: Round brilliant

Certificate GIA 5513024356

Diamond specifications and retailer prices

From $3,123 SGD
As of November 5, 2026
Save $2,549 SGD (45%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: $6,786 SGD at NZ Jewellers · As of September 26, 2026
View at NZ Jewellers

About this 1.39ct natural round diamond

This 1.39ct natural round sits in the one-and-a-quarter to one-and-a-half carat band, graded K colour (faint-tinted) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by GIA 5513024356. Listed at 10 retailers as of November 4, 2026, with a 82% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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

1.39
Carat
K
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
Crown angle36°
Pavilion angle40.6°
OriginNatural
Grading LabGIA
CertificateGIA 5513024356
Dimensions7.08 × 7.12 × 4.45 mm
L/W Ratio1.01
Star length45%
Lower girdle80%
Top View
7.08 mm7.12 mm1.39 ctK / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 5513024356
Side View
Table 56.0%Crown 36°Girdle: THN-MEDPavilion 40.6°Culet: NoneDepth 62.7%

Caratlytics Score

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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: $3,414 SGD|Low: $3,123 SGD|High: $5,822 SGD|Avg: $4,044 SGD|-0.0%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
November 6, 2026
Retailer 5$3,123 SGD
Retailer 1$3,414 SGD
Retailer 3$3,962 SGD
Retailer 2$4,023 SGD
Retailer 4$5,672 SGD

43 data points across 5 retailers

10 retailers$3,123 SGD to $5,672 SGD

A
Cheapest Retailer
-
$3,123 SGD
Retailer 2
-
$3,246 SGD
View
Price last confirmed 29 days ago
Retailer 3
-
$3,246 SGD
View
Price last confirmed 29 days ago
Retailer 4
-
$3,396 SGD
View
Price last confirmed 38 days ago
A
Retailer 5
-
$3,414 SGD
View
Retailer 6
-
$3,745 SGD
View
Price last confirmed 38 days ago
B+
Retailer 7
-
$3,962 SGD
View
B+
Retailer 8
-
$4,023 SGD
View
B
Retailer 9
-
$5,672 SGD
View
Most Expensive
NZ Jewellers
4d4d3ac1-287e-499c-bdab-c1af1402e004 · Sep 26
$6,786 SGD
$5,313 USD
View
Price last confirmed 40 days ago
9 more retailers have this diamond
Prices start from $3,123 SGDSave up to $2,549 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
1.39ct Round
$3,123 SGD