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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 $311 SGD
HK$1,900 HKD
As of October 30, 2026
Save $1,306 SGD (81%) vs most expensive(unlock to see where)
18 retailers carry this diamond
Most expensive: $1,617 SGD 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 $311 to $1,617, a $1,306 spread on the same certified stone. NZ Jewellers lists it at $1,617. 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: $452 SGD|Low: $311 SGD|High: $835 SGD|Avg: $509 SGD|+6.3%
Retailer 1
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 4$311 SGD
Retailer 8$371 SGD
Retailer 12$377 SGD
Retailer 10$440 SGD
Retailer 9$441 SGD
Retailer 1$452 SGD
Retailer 3$483 SGD
Retailer 6$554 SGD
Retailer 11$572 SGD
Retailer 5$607 SGD
Retailer 2$616 SGD
Retailer 7$830 SGD

44 data points across 12 retailers

18 retailers$311 SGD to $1,617 SGD

A
Cheapest Retailer
-
$311 SGD
HK$1,900 HKD
B+
Retailer 2
-
$357 SGD
$279 USD
View
Retailer 3
-
$371 SGD
$290 USD
View
Price last confirmed 10 days ago
B+
Retailer 4
-
$380 SGD
View
B+
Retailer 5
-
$385 SGD
$301 USD
View
B+
Retailer 6
-
$399 SGD
$312 USD
View
B+
Retailer 7
-
$440 SGD
$344 USD
View
B+
Retailer 8
-
$441 SGD
$345 USD
View
B+
Retailer 9
-
$452 SGD
£278 GBP
View
B+
Retailer 10
-
$481 SGD
$376 USD
View
B+
Retailer 11
-
$483 SGD
$377 USD
View
B+
Retailer 12
-
$524 SGD
$410 USD
View
B+
Retailer 13
-
$554 SGD
ZAR 6,996 ZAR
View
Retailer 14
-
$572 SGD
A$688 AUD
View
Price last confirmed 27 days ago
B+
Retailer 15
-
$607 SGD
€452 EUR
View
B
Retailer 16
-
$616 SGD
$482 USD
View
B
Retailer 17
-
$830 SGD
£511 GBP
View
Most Expensive
C
NZ Jewellers
2a665f7e-3b1f-4e63-9573-ba74aa8ed566 · Oct 30
$1,617 SGD
$1,265 USD
View
17 more retailers have this diamond
Prices start from $311 SGDSave up to $1,306 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
0.40ct Round
$311 SGD