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Marquise|Natural|IGI

1.51ct L SI2 Marquise Natural Diamond

EX • L/SI2 • IGI 538263831

Shape and cutting style on the report: Marquise brilliant

Certificate IGI 538263831

Diamond specifications and retailer prices

From $4,638 AUD
As of November 6, 2026
Save $5,411 AUD (54%) vs most expensive(unlock to see where)
9 retailers carry this diamond
Most expensive: $10,050 AUD at NZ Jewellers · As of November 5, 2026
View at NZ Jewellers

About this 1.51ct natural marquise diamond

This 1.51ct natural marquise sits in the one-and-a-half to two carat band, graded L colour (faint-tinted) and SI2 clarity (slightly-included), with a top-tier cut grade and certified by IGI 538263831. Listed at 9 retailers as of November 5, 2026, with prices from $4,638 to $10,050, a $5,411 spread on the same certified stone. NZ Jewellers lists it at $10,050. 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

1.51
Carat
L
Colour
SI2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
Crown angle37.5°
Pavilion angle38.6°
OriginNatural
Grading LabIGI
CertificateIGI 538263831
Dimensions12.21 × 5.80 × 3.52 mm
L/W Ratio2.11
Girdle conditionFaceted
Culet sizeVery Small
Cert comments
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Top View
12.21 mm5.80 mm1.51 ctL / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateIGI 538263831
Side View
Table 56.0%Crown 37.5°Girdle: STK-VTKPavilion 38.6°Culet: Very SmallDepth 60.7%

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: Nov 6
Current: $10,050 AUD|Low: $3,967 AUD|High: $10,050 AUD|Avg: $6,119 AUD
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
November 6, 2026
Retailer 3$3,967 AUD
Retailer 8$4,638 AUD
Retailer 9$4,862 AUD
Retailer 4$5,225 AUD
Retailer 7$5,225 AUD
Retailer 5$5,426 AUD
Retailer 6$6,030 AUD
Retailer 2$6,276 AUD
Retailer 11$6,982 AUD
Retailer 10$8,267 AUD
NZ Jewellers$10,050 AUD

22 data points across 11 retailers

9 retailers$4,638 AUD to $10,050 AUD

B+
Cheapest Retailer
-
$4,638 AUD
B+
Retailer 2
-
$4,862 AUD
View
B
Retailer 3
-
$5,225 AUD
View
Retailer 4
-
$5,225 AUD
View
Price last confirmed 8 days ago
B
Retailer 5
-
$5,426 AUD
View
B
Retailer 6
-
$6,030 AUD
View
B
Retailer 7
-
$6,276 AUD
View
C
Retailer 8
-
$8,267 AUD
View
Most Expensive
C
NZ Jewellers
a0a49268-6421-4df6-876d-4aad60c84721 · Nov 5
$10,050 AUD
$6,905 USD
View
8 more retailers have this diamond
Prices start from $4,638 AUDSave up to $5,411 AUD

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+
1.51ct Marquise
$4,638 AUD