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Marquise|Natural|IGI

1.51ct K SI1 Marquise Natural Diamond

VG • K/SI1 • IGI 564379971

Shape and cutting style on the report: Marquise brilliant

Certificate IGI 564379971

Diamond specifications and retailer prices

From $3,953 AUD
As of November 6, 2026
10 retailers carry this diamond
Most expensive: $8,892 AUD at NZ Jewellers · As of October 17, 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 K colour (faint-tinted) and SI1 clarity (slightly-included), with a very-good cut grade and certified by IGI 564379971. Listed at 10 retailers as of November 6, 2026. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

1.51
Carat
K
Colour
SI1
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle40.8°
Pavilion angle38.2°
OriginNatural
Grading LabIGI
CertificateIGI 564379971
Dimensions10.98 × 5.93 × 3.73 mm
L/W Ratio1.85
Girdle conditionFaceted
Culet sizePointed
Cert comments
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Top View
10.98 mm5.93 mm1.51 ctK / SI1
OriginNatural
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI 564379971
Side View
Table 58.5%Crown 40.8°Girdle: STK-THKPavilion 38.2°Culet: NoneDepth 62.9%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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Price History

Last verified: Nov 6
Current: $8,892 AUD|Low: $3,809 AUD|High: $8,892 AUD|Avg: $4,895 AUD
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Retailer 14
November 6, 2026
Retailer 5$3,809 AUD
Retailer 3$3,842 AUD
Retailer 12$3,938 AUD
Retailer 2$3,953 AUD
Retailer 8$4,066 AUD
Retailer 6$4,155 AUD
Retailer 4$4,253 AUD
Retailer 11$4,253 AUD
Retailer 14$4,417 AUD
Retailer 7$4,653 AUD
Retailer 9$4,908 AUD
Retailer 13$5,162 AUD
Retailer 10$7,312 AUD
NZ Jewellers$8,892 AUD

44 data points across 14 retailers

10 retailers

Retailer 1
-
$3,809 AUD
Price last confirmed 18 days ago
Retailer 2
-
$3,842 AUD
View
Price last confirmed 19 days ago
A
Retailer 3
-
$3,953 AUD
View
Retailer 4
-
$4,253 AUD
View
Price last confirmed 20 days ago
Retailer 5
-
$4,417 AUD
View
Price last confirmed 22 days ago
Retailer 6
-
$4,459 AUD
View
Price last confirmed 20 days ago
Retailer 7
-
$4,908 AUD
View
Price last confirmed 19 days ago
Retailer 8
-
$5,162 AUD
View
Price last confirmed 21 days ago
Retailer 9
-
$7,312 AUD
View
Price last confirmed 19 days ago
Most Expensive
NZ Jewellers
534cca71-8742-453c-b014-102c3bf08f18 · Oct 17
$8,892 AUD
$6,110 USD
View
Price last confirmed 20 days ago
9 more retailers have this diamond
Prices start from $3,953 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.

A
1.51ct Marquise
$3,953 AUD