Round|Natural|GIA

0.40ct J SI1 Round Natural Diamond

EX • J/SI1 • GIA 1519021693

Certificate GIA 1519021693

Diamond specifications and retailer prices

From $644 NZD
₹34,574 INR
As of October 31, 2026
Save $1,411 NZD (69%) vs most expensive(unlock to see where)
21 retailers carry this diamond
Most expensive: $3,405 NZD 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: $3,405 NZD|Low: $642 NZD|High: $3,405 NZD|Avg: $1,297 NZD
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$644 NZD
Retailer 12$889 NZD
Retailer 9$896 NZD
Retailer 3$956 NZD
Retailer 4$956 NZD
Retailer 5$1,106 NZD
Retailer 7$1,209 NZD
Retailer 10$1,251 NZD
Retailer 11$1,336 NZD
Retailer 6$1,378 NZD
Retailer 8$2,055 NZD
NZ Jewellers$3,405 NZD

33 data points across 12 retailers

21 retailers$644 NZD to $2,055 NZD

A
Cheapest Retailer
-
$644 NZD
₹34,574 INR
B+
Retailer 2
-
$841 NZD
$474 USD
View
Retailer 3
-
$889 NZD
$501 USD
View
Price last confirmed 37 days ago
B+
Retailer 4
-
$889 NZD
$501 USD
View
Retailer 5
-
$896 NZD
$505 USD
View
Price last confirmed 10 days ago
B+
Retailer 6
-
$927 NZD
SGD 706 SGD
View
B
Retailer 7
-
$956 NZD
$539 USD
View
B
Retailer 8
-
$956 NZD
$539 USD
View
Retailer 9
-
$1,026 NZD
$578 USD
View
Price last confirmed 39 days ago
B
Retailer 10
-
$1,106 NZD
£491 GBP
View
B
Retailer 11
-
$1,121 NZD
$632 USD
View
B
Retailer 12
-
$1,207 NZD
$680 USD
View
B
Retailer 13
-
$1,209 NZD
€649 EUR
View
Retailer 14
-
$1,218 NZD
$686 USD
View
Price last confirmed 8 days ago
B
Retailer 15
-
$1,248 NZD
$703 USD
View
B
Retailer 16
-
$1,251 NZD
$705 USD
View
Retailer 17
-
$1,336 NZD
A$1,158 AUD
View
Price last confirmed 27 days ago
B
Retailer 18
-
$1,378 NZD
ZAR 12,543 ZAR
View
B
Retailer 19
-
$2,055 NZD
£912 GBP
View
Retailer 20
-
$3,405 NZD
$1,919 USD
View
Price under review
Most Expensive
NZ Jewellers
a447cac8-4a83-4c83-9723-810f02c6a6a6 · Sep 24
$3,405 NZD
$1,919 USD
View
Price under review
20 more retailers have this diamond
Prices start from $644 NZDSave up to $1,411 NZD

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
$644 NZD