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Round|Natural|GIA

0.40ct J SI1 Round Natural Diamond

EX • J/SI1 • GIA 1519021693

Certificate GIA 1519021693

Diamond specifications and retailer prices

From $517 AUD
₹34,574 INR
As of October 31, 2026
Save $1,132 AUD (69%) vs most expensive(unlock to see where)
21 retailers carry this diamond
Most expensive: $2,732 AUD at NZ Jewellers · As of September 24, 2026
View at NZ Jewellers

About this 0.4ct natural round diamond

This 0.4ct 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 1519021693. Listed at 21 retailers as of October 26, 2026, with a 219% 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

0.40
Carat
J
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.5°
Pavilion angle41.2°
OriginNatural
Grading LabGIA
CertificateGIA 1519021693
Dimensions4.76 × 4.74 × 2.92 mm
L/W Ratio1.00
Star length50%
Lower girdle80%
Key to symbols
Twinning Wisp
Top View
4.76 mm4.74 mm0.40 ctJ / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 1519021693
Side View
Table 57.0%Crown 34.5°Girdle: MediumPavilion 41.2°Culet: NoneDepth 61.4%

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 31
Current: $2,732 AUD|Low: $515 AUD|High: $2,732 AUD|Avg: $1,040 AUD
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
October 31, 2026
Retailer 2$517 AUD
Retailer 12$713 AUD
Retailer 9$719 AUD
Retailer 3$767 AUD
Retailer 4$767 AUD
Retailer 5$887 AUD
Retailer 7$970 AUD
Retailer 10$1,004 AUD
Retailer 11$1,072 AUD
Retailer 6$1,105 AUD
Retailer 8$1,649 AUD
NZ Jewellers$2,732 AUD

33 data points across 12 retailers

21 retailers$517 AUD to $1,649 AUD

A
Cheapest Retailer
-
$517 AUD
₹34,574 INR
B+
Retailer 2
-
$675 AUD
$474 USD
View
Retailer 3
-
$713 AUD
$501 USD
View
Price last confirmed 37 days ago
B+
Retailer 4
-
$713 AUD
$501 USD
View
Retailer 5
-
$719 AUD
$505 USD
View
Price last confirmed 10 days ago
B+
Retailer 6
-
$744 AUD
SGD 706 SGD
View
B
Retailer 7
-
$767 AUD
$539 USD
View
B
Retailer 8
-
$767 AUD
$539 USD
View
Retailer 9
-
$823 AUD
$578 USD
View
Price last confirmed 39 days ago
B
Retailer 10
-
$887 AUD
£491 GBP
View
B
Retailer 11
-
$900 AUD
$632 USD
View
B
Retailer 12
-
$968 AUD
$680 USD
View
B
Retailer 13
-
$970 AUD
€649 EUR
View
Retailer 14
-
$977 AUD
$686 USD
View
Price last confirmed 8 days ago
B
Retailer 15
-
$1,001 AUD
$703 USD
View
B
Retailer 16
-
$1,004 AUD
$705 USD
View
Retailer 17
-
$1,072 AUD
View
Price last confirmed 27 days ago
B
Retailer 18
-
$1,105 AUD
ZAR 12,543 ZAR
View
B
Retailer 19
-
$1,649 AUD
£912 GBP
View
Retailer 20
-
$2,732 AUD
$1,919 USD
View
Price under review
Most Expensive
NZ Jewellers
a447cac8-4a83-4c83-9723-810f02c6a6a6 · Sep 24
$2,732 AUD
$1,919 USD
View
Price under review
20 more retailers have this diamond
Prices start from $517 AUDSave up to $1,132 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
0.40ct Round
$517 AUD