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Round|Natural|GIA

0.40ct D SI2 Round Natural Diamond

EX • D/SI2 • GIA 1518541183

Certificate GIA 1518541183

Diamond specifications and retailer prices

From $1,350 NZD
$758 USD
As of October 29, 2026
Save $1,391 NZD (51%) vs most expensive(unlock to see where)
18 retailers carry this diamond
Most expensive: $4,668 NZD 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 D colour (colourless) and SI2 clarity (slightly-included), with a top-tier cut grade and certified by GIA 1518541183. Listed at 18 retailers as of October 29, 2026, with a 103% 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
D
Colour
SI2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33°
Pavilion angle41.4°
OriginNatural
Grading LabGIA
CertificateGIA 1518541183
Dimensions4.77 × 4.73 × 2.88 mm
L/W Ratio1.01
Star length45%
Lower girdle80%
Girdle conditionFaceted
Culet sizeNone
Key to symbols
Crystal, Cloud, Feather
Top View
4.77 mm4.73 mm0.40 ctD / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 1518541183
Side View
Table 61.0%Crown 33°Girdle: MED-STKPavilion 41.4°Culet: NoneDepth 60.6%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 29
Current: $4,668 NZD|Low: $1,318 NZD|High: $4,668 NZD|Avg: $1,997 NZD
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
October 30, 2026
Retailer 5$1,318 NZD
Retailer 10$1,325 NZD
Retailer 7$1,350 NZD
Retailer 9$1,350 NZD
Retailer 6$1,401 NZD
Retailer 8$1,556 NZD
Retailer 2$1,784 NZD
Retailer 3$1,941 NZD
Retailer 4$2,741 NZD
NZ Jewellers$4,668 NZD

43 data points across 10 retailers

18 retailers$1,350 NZD to $2,741 NZD

Retailer 1
-
$1,318 NZD
$740 USD
Price last confirmed 9 days ago
Retailer 2
-
$1,325 NZD
$744 USD
View
Price last confirmed 22 days ago
B+
Retailer 3
-
$1,350 NZD
$758 USD
View
B+
Retailer 4
-
$1,350 NZD
$758 USD
View
B+
Retailer 5
-
$1,360 NZD
$764 USD
View
B+
Retailer 6
-
$1,377 NZD
A$1,189 AUD
View
B+
Retailer 7
-
$1,401 NZD
$787 USD
View
B+
Retailer 8
-
$1,556 NZD
$874 USD
View
B
Retailer 9
-
$1,656 NZD
$930 USD
View
B
Retailer 10
-
$1,656 NZD
$930 USD
View
B
Retailer 11
-
$1,709 NZD
$960 USD
View
B
Retailer 12
-
$1,784 NZD
£789 GBP
View
B
Retailer 13
-
$1,902 NZD
$1,068 USD
View
B
Retailer 14
-
$1,941 NZD
€1,038 EUR
View
B
Retailer 15
-
$1,994 NZD
£882 GBP
View
B
Retailer 16
-
$2,396 NZD
CA$1,869 CAD
View
B
Retailer 17
-
$2,741 NZD
£1,212 GBP
View
Most Expensive
NZ Jewellers
1a3c0a3a-44e4-4f87-a291-68ad92ac507e · Oct 30
$4,668 NZD
$2,622 USD
View
Price under review
17 more retailers have this diamond
Prices start from $1,350 NZDSave up to $1,391 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.

B+
0.40ct Round
$1,350 NZD