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Round|Natural|GIA

0.40ct J SI1 Round Natural Diamond

VG • J/SI1 • GIA 7383204720

Certificate GIA 7383204720

Diamond specifications and retailer prices

From $346 AUD
HK$1,900 HKD
As of October 30, 2026
Save $1,455 AUD (81%) vs most expensive(unlock to see where)
18 retailers carry this diamond
Most expensive: $1,801 AUD at NZ Jewellers · As of October 30, 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 very-good cut grade and certified by GIA 7383204720. Listed at 18 retailers as of October 30, 2026, with prices from $346 to $1,801, a $1,455 spread on the same certified stone. NZ Jewellers lists it at $1,801. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

0.40
Carat
J
Colour
SI1
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishVery Good
SymmetryGood
FluorescenceNone
Crown angle32.5°
Pavilion angle41.4°
OriginNatural
Grading LabGIA
CertificateGIA 7383204720
Dimensions4.74 × 4.68 × 2.90 mm
L/W Ratio1.01
Star length45%
Lower girdle75%
Top View
4.74 mm4.68 mm0.40 ctJ / SI1
OriginNatural
CutVery Good
PolishVery Good
SymmetryGood
FluorescenceNone
CertificateGIA 7383204720
Side View
Table 59.0%Crown 32.5°Girdle: THN-THKPavilion 41.4°Culet: NoneDepth 61.6%

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 30
Current: $918 AUD|Low: $346 AUD|High: $929 AUD|Avg: $566 AUD|-0.2%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
November 1, 2026
Retailer 4$346 AUD
Retailer 8$413 AUD
Retailer 12$420 AUD
Retailer 10$490 AUD
Retailer 9$491 AUD
Retailer 5$503 AUD
Retailer 3$537 AUD
Retailer 7$616 AUD
Retailer 11$637 AUD
Retailer 6$676 AUD
Retailer 2$686 AUD
Retailer 1$918 AUD

44 data points across 12 retailers

18 retailers$346 AUD to $1,801 AUD

A
Cheapest Retailer
-
$346 AUD
HK$1,900 HKD
B+
Retailer 2
-
$397 AUD
$279 USD
View
Retailer 3
-
$413 AUD
$290 USD
View
Price last confirmed 10 days ago
B+
Retailer 4
-
$423 AUD
SGD 402 SGD
View
B+
Retailer 5
-
$429 AUD
$301 USD
View
B+
Retailer 6
-
$444 AUD
$312 USD
View
B+
Retailer 7
-
$490 AUD
$344 USD
View
B+
Retailer 8
-
$491 AUD
$345 USD
View
B+
Retailer 9
-
$503 AUD
£278 GBP
View
B+
Retailer 10
-
$535 AUD
$376 USD
View
B+
Retailer 11
-
$537 AUD
$377 USD
View
B+
Retailer 12
-
$583 AUD
$410 USD
View
B+
Retailer 13
-
$616 AUD
ZAR 6,996 ZAR
View
Retailer 14
-
$637 AUD
View
Price last confirmed 28 days ago
B+
Retailer 15
-
$676 AUD
€452 EUR
View
B
Retailer 16
-
$686 AUD
$482 USD
View
B
Retailer 17
-
$918 AUD
£508 GBP
View
Most Expensive
C
NZ Jewellers
2a665f7e-3b1f-4e63-9573-ba74aa8ed566 · Oct 30
$1,801 AUD
$1,265 USD
View
17 more retailers have this diamond
Prices start from $346 AUDSave up to $1,455 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
$346 AUD