Round|Natural|GIA

0.30ct J SI1 Round Natural Diamond

EX • J/SI1 • GIA 7478044614

Certificate GIA 7478044614

Diamond specifications and retailer prices

From $364 SGD
$285 USD
As of October 28, 2026
Save $853 SGD (70%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: $1,543 SGD at NZ Jewellers · As of October 29, 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 J colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by GIA 7478044614. Listed at 19 retailers as of October 28, 2026, with a 234% 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

0.30
Carat
J
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.5°
Pavilion angle40.6°
OriginNatural
Grading LabGIA
CertificateGIA 7478044614
Dimensions4.29 × 4.27 × 2.62 mm
L/W Ratio1.00
Star length45%
Lower girdle75%
Top View
4.29 mm4.27 mm0.30 ctJ / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 7478044614
Side View
Table 59.0%Crown 35.5°Girdle: MED-STKPavilion 40.6°Culet: NoneDepth 61.3%

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: Oct 28
Current: $515 SGD|Low: $430 SGD|High: $940 SGD|Avg: $658 SGD|+4.7%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
October 31, 2026
Retailer 7$430 SGD
Retailer 1$515 SGD
Retailer 2$624 SGD
Retailer 6$645 SGD
Retailer 4$673 SGD
Retailer 3$817 SGD
Retailer 5$935 SGD

37 data points across 7 retailers

19 retailers$364 SGD to $1,218 SGD

A
Cheapest Retailer
-
$364 SGD
$285 USD
A
Retailer 2
-
$380 SGD
$297 USD
View
Retailer 3
-
$385 SGD
$301 USD
View
Price last confirmed 45 days ago
B+
Retailer 4
-
$392 SGD
$307 USD
View
B+
Retailer 5
-
$407 SGD
$318 USD
View
B+
Retailer 6
-
$422 SGD
$330 USD
View
B+
Retailer 7
-
$457 SGD
$357 USD
View
B+
Retailer 8
-
$483 SGD
$378 USD
View
B+
Retailer 9
-
$491 SGD
$384 USD
View
B
Retailer 10
-
$515 SGD
£317 GBP
View
B
Retailer 11
-
$521 SGD
$408 USD
View
B+
Retailer 12
-
$532 SGD
$416 USD
View
B
Retailer 13
-
$624 SGD
ZAR 7,884 ZAR
View
Retailer 14
-
$645 SGD
A$776 AUD
View
Price last confirmed 27 days ago
B
Retailer 15
-
$673 SGD
€501 EUR
View
B
Retailer 16
-
$817 SGD
£503 GBP
View
B
Retailer 17
-
$935 SGD
£576 GBP
View
B
Retailer 18
-
$1,218 SGD
CA$1,323 CAD
View
Most Expensive
NZ Jewellers
ad9006a4-52cd-4368-908c-5c84af0fb9fd · Oct 29
$1,543 SGD
$1,207 USD
View
Price under review
18 more retailers have this diamond
Prices start from $364 SGDSave up to $853 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
$364 SGD