CaratHunter
Plans
Marquise|Natural|IGI

0.40ct I SI1 Marquise Natural Diamond

EX • I/SI1 • IGI 831665201

Shape and cutting style on the report: Marquise brilliant

Certificate IGI 831665201

Diamond specifications and retailer prices

From $426 CAD
$305 USD
As of October 29, 2026
Save $438 CAD (51%) vs most expensive(unlock to see where)
9 retailers carry this diamond
Most expensive: $1,632 CAD at NZ Jewellers · As of October 30, 2026
View at NZ Jewellers

About this 0.4ct natural marquise diamond

This 0.4ct natural marquise sits in the sub-half-carat band, graded I colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI 831665201. Listed at 9 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
I
Color
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishVery Good
SymmetryVery Good
FluorescenceFaint
Crown angle36°
Pavilion angle41.6°
OriginNatural
Grading LabIGI
CertificateIGI 831665201
Dimensions7.22 × 3.95 × 2.48 mm
L/W Ratio1.83
Girdle conditionFaceted
Culet sizeNone
Top View
7.22 mm3.95 mm0.40 ctI / SI1
OriginNatural
CutExcellent
PolishVery Good
SymmetryVery Good
FluorescenceFaint
CertificateIGI 831665201
Side View
Table 59.0%Crown 36°Girdle: THN-MEDPavilion 41.6°Culet: NoneDepth 62.8%

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 29
Current: $1,632 CAD|Low: $426 CAD|High: $1,749 CAD|Avg: $796 CAD|-6.7%
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
October 31, 2026
Retailer 7$426 CAD
Retailer 6$475 CAD
Retailer 9$608 CAD
Retailer 2$608 CAD
Retailer 8$641 CAD
Retailer 3$738 CAD
Retailer 4$864 CAD
Retailer 5$985 CAD
NZ Jewellers$1,632 CAD

37 data points across 9 retailers

9 retailers$426 CAD to $864 CAD

A
Cheapest Retailer
-
$426 CAD
$305 USD
A
Retailer 2
-
$475 CAD
$340 USD
View
B+
Retailer 3
-
$608 CAD
$435 USD
View
B+
Retailer 4
-
$608 CAD
$435 USD
View
B+
Retailer 5
-
$641 CAD
$459 USD
View
B
Retailer 6
-
$738 CAD
€503 EUR
View
B
Retailer 7
-
$864 CAD
£487 GBP
View
Retailer 8
-
$985 CAD
£555 GBP
View
Price last confirmed 8 days ago
Most Expensive
NZ Jewellers
3550a96d-9dd8-45ae-bf61-3e8d29e63267 · Oct 30
$1,632 CAD
$1,168 USD
View
Price under review
8 more retailers have this diamond
Prices start from $426 CADSave up to $438 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.

A
0.40ct Marquise
$426 CAD