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Round|Natural|GIA

0.40ct D SI2 Round Natural Diamond

EX • D/SI2 • GIA 2507684551

Certificate GIA 2507684551

Diamond specifications and retailer prices

From $1,061 CAD
$758 USD
As of October 29, 2026
Save $1,093 CAD (51%) vs most expensive(unlock to see where)
18 retailers carry this diamond
Most expensive: $3,670 CAD at NZ Jewellers · As of October 26, 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 2507684551. 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
Color
SI2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.5°
Pavilion angle41.2°
OriginNatural
Grading LabGIA
CertificateGIA 2507684551
Dimensions4.75 × 4.72 × 2.90 mm
L/W Ratio1.01
Star length55%
Lower girdle80%
Top View
4.75 mm4.72 mm0.40 ctD / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 2507684551
Side View
Table 61.0%Crown 34.5°Girdle: MED-STKPavilion 41.2°Culet: NoneDepth 61.2%

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: $3,670 CAD|Low: $1,036 CAD|High: $3,670 CAD|Avg: $1,571 CAD
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
October 29, 2026
Retailer 5$1,036 CAD
Retailer 10$1,041 CAD
Retailer 7$1,061 CAD
Retailer 9$1,061 CAD
Retailer 6$1,101 CAD
Retailer 8$1,223 CAD
Retailer 3$1,398 CAD
Retailer 2$1,525 CAD
Retailer 4$2,154 CAD
NZ Jewellers$3,670 CAD

41 data points across 10 retailers

18 retailers$1,061 CAD to $2,154 CAD

B+
Retailer 1
-
$1,036 CAD
$740 USD
Price last confirmed 9 days ago
B+
Retailer 2
-
$1,041 CAD
$744 USD
View
Price last confirmed 22 days ago
B+
Retailer 3
-
$1,061 CAD
$758 USD
View
B+
Retailer 4
-
$1,061 CAD
$758 USD
View
B+
Retailer 5
-
$1,069 CAD
$764 USD
View
B+
Retailer 6
-
$1,082 CAD
A$1,189 AUD
View
B+
Retailer 7
-
$1,101 CAD
$787 USD
View
B+
Retailer 8
-
$1,223 CAD
$874 USD
View
B
Retailer 9
-
$1,302 CAD
$930 USD
View
B
Retailer 10
-
$1,302 CAD
$930 USD
View
B
Retailer 11
-
$1,344 CAD
$960 USD
View
B
Retailer 12
-
$1,398 CAD
£786 GBP
View
B
Retailer 13
-
$1,495 CAD
$1,068 USD
View
B
Retailer 14
-
$1,525 CAD
€1,038 EUR
View
B
Retailer 15
-
$1,654 CAD
£930 GBP
View
B
Retailer 16
-
$1,883 CAD
View
B
Retailer 17
-
$2,154 CAD
£1,212 GBP
View
Most Expensive
B
NZ Jewellers
3cc5280c-b09b-479f-ab98-90e441083a6f · Oct 26
$3,670 CAD
$2,622 USD
View
Price under review
17 more retailers have this diamond
Prices start from $1,061 CADSave up to $1,093 CAD

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
$1,061 CAD