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Round|Natural|GIA

0.30ct K SI1 Round Natural Diamond

EX • K/SI1 • GIA 1377580731

Certificate GIA 1377580731

Diamond specifications and retailer prices

From $229 SGD
As of November 6, 2026
Save $961 SGD (81%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: $1,189 SGD at NZ Jewellers · As of November 4, 2026
View at NZ Jewellers

About this 0.3ct natural round diamond

This 0.3ct natural round sits in the sub-half-carat band, graded K colour (faint-tinted) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by GIA 1377580731. Listed at 16 retailers as of November 4, 2026, with prices from $229 to $1,189, a $961 spread on the same certified stone. NZ Jewellers lists it at $1,189. 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

0.30
Carat
K
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.5°
Pavilion angle41.2°
OriginNatural
Grading LabGIA
CertificateGIA 1377580731
Dimensions4.34 × 4.31 × 2.69 mm
L/W Ratio1.01
Star length50%
Key to symbols
Crystal, Feather
Top View
4.34 mm4.31 mm0.30 ctK / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 1377580731
Side View
Table 56.0%Crown 35.5°Girdle: ThinPavilion 41.2°Culet: NoneDepth 62.1%

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 6
Current: $282 SGD|Low: $229 SGD|High: $613 SGD|Avg: $419 SGD
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
November 6, 2026
Retailer 9$229 SGD
Retailer 5$268 SGD
Retailer 1$282 SGD
Retailer 8$340 SGD
Retailer 7$344 SGD
Retailer 4$409 SGD
Retailer 3$459 SGD
Retailer 2$556 SGD
Retailer 6$604 SGD

40 data points across 9 retailers

16 retailers$229 SGD to $1,189 SGD

A
Cheapest Retailer
-
$229 SGD
A
Retailer 2
-
$263 SGD
View
A
Retailer 3
-
$268 SGD
View
Retailer 4
-
$282 SGD
View
Price last confirmed 8 days ago
A
Retailer 5
-
$282 SGD
View
A
Retailer 6
-
$293 SGD
View
A
Retailer 7
-
$330 SGD
View
A
Retailer 8
-
$340 SGD
View
A
Retailer 9
-
$344 SGD
View
A
Retailer 10
-
$354 SGD
View
B+
Retailer 11
-
$409 SGD
View
B+
Retailer 12
-
$428 SGD
View
B+
Retailer 13
-
$459 SGD
View
B+
Retailer 14
-
$556 SGD
View
B
Retailer 15
-
$604 SGD
View
Most Expensive
B
NZ Jewellers
ff69c0e4-b614-4989-a8d1-cae0109d269d · Nov 4
$1,189 SGD
$931 USD
View
15 more retailers have this diamond
Prices start from $229 SGDSave up to $961 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
0.30ct Round
$229 SGD