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Round|Natural|GIA

0.30ct J SI1 Round Natural Diamond

EX • J/SI1 • GIA 2557240411

Certificate GIA 2557240411

Diamond specifications and retailer prices

From $228 AUD
₹15,262 INR
As of October 29, 2026
Save $1,223 AUD (84%) vs most expensive(unlock to see where)
21 retailers carry this diamond
Most expensive: $1,451 AUD at NZ Jewellers · As of October 26, 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 2557240411. Listed at 21 retailers as of October 26, 2026, with prices from $228 to $1,451, a $1,223 spread on the same certified stone. NZ Jewellers lists it at $1,451. 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
FluorescenceFaint
Crown angle33.5°
Pavilion angle41.2°
OriginNatural
Grading LabGIA
CertificateGIA 2557240411
Dimensions4.34 × 4.37 × 2.63 mm
L/W Ratio1.01
Key to symbols
Crystal, Cloud
Top View
4.34 mm4.37 mm0.30 ctJ / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 2557240411
Side View
Table 60.0%Crown 33.5°Girdle: MED-STKPavilion 41.2°Culet: NoneDepth 60.5%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 29
Current: $1,451 AUD|Low: $228 AUD|High: $1,530 AUD|Avg: $510 AUD|-5.2%
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Retailer 14
Retailer 15
Retailer 16
Retailer 17
Retailer 18
Retailer 19
October 29, 2026
Retailer 12$228 AUD
Retailer 11$292 AUD
Retailer 9$323 AUD
Retailer 10$345 AUD
Retailer 13$349 AUD
Retailer 3$351 AUD
Retailer 8$360 AUD
Retailer 19$393 AUD
Retailer 18$406 AUD
Retailer 4$431 AUD
Retailer 2$490 AUD
Retailer 17$493 AUD
Retailer 6$500 AUD
Retailer 7$508 AUD
Retailer 16$570 AUD
Retailer 5$616 AUD
Retailer 14$658 AUD
Retailer 15$750 AUD
NZ Jewellers$1,451 AUD

16 data points across 19 retailers

21 retailers$228 AUD to $1,451 AUD

A
Cheapest Retailer
-
$228 AUD
₹15,262 INR
A
Retailer 2
-
$292 AUD
HK$1,600 HKD
View
A
Retailer 3
-
$323 AUD
$227 USD
View
A
Retailer 4
-
$345 AUD
$242 USD
View
A
Retailer 5
-
$349 AUD
$245 USD
View
A
Retailer 6
-
$351 AUD
SGD 333 SGD
View
A
Retailer 7
-
$360 AUD
$253 USD
View
A
Retailer 8
-
$393 AUD
$276 USD
View
Retailer 9
-
$399 AUD
$280 USD
View
Price last confirmed 31 days ago
A
Retailer 10
-
$406 AUD
View
A
Retailer 11
-
$431 AUD
$303 USD
View
B+
Retailer 12
-
$490 AUD
£271 GBP
View
B+
Retailer 13
-
$493 AUD
$347 USD
View
B+
Retailer 14
-
$500 AUD
ZAR 5,676 ZAR
View
B+
Retailer 15
-
$508 AUD
$357 USD
View
B+
Retailer 16
-
$570 AUD
€381 EUR
View
B+
Retailer 17
-
$616 AUD
$433 USD
View
B+
Retailer 18
-
$658 AUD
£364 GBP
View
Retailer 19
-
$699 AUD
View
Price last confirmed 26 days ago
B
Retailer 20
-
$750 AUD
£415 GBP
View
Most Expensive
B
NZ Jewellers
7b8de99c-d9d9-4c07-962a-4c086db14888 · Oct 26
$1,451 AUD
$1,019 USD
View
20 more retailers have this diamond
Prices start from $228 AUDSave up to $1,223 AUD

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
$228 AUD