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Marquise|Natural|IGI

1.51ct K SI1 Marquise Natural Diamond

EX • K/SI1 • IGI 803629208

Shape and cutting style on the report: Marquise brilliant

Certificate IGI 803629208

Diamond specifications and retailer prices

From $5,298 NZD
As of November 6, 2026
Save $5,255 NZD (50%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: $10,553 NZD 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 K colour (faint-tinted) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI 803629208. Listed at 15 retailers as of November 5, 2026, with prices from $5,298 to $10,553, a $5,255 spread on the same certified stone. NZ Jewellers lists it at $10,553. 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
K
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.8°
Pavilion angle41.2°
OriginNatural
Grading LabIGI
CertificateIGI 803629208
Dimensions11.92 × 5.91 × 3.73 mm
L/W Ratio2.02
Girdle conditionFaceted
Top View
11.92 mm5.91 mm1.51 ctK / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI 803629208
Side View
Table 61.0%Crown 34.8°Girdle: MED-STKPavilion 41.2°Culet: NoneDepth 63.1%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 6
Current: $10,553 NZD|Low: $5,298 NZD|High: $10,876 NZD|Avg: $7,038 NZD|-3.0%
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
Retailer 15
November 7, 2026
Retailer 9$5,298 NZD
Retailer 8$5,385 NZD
Retailer 5$5,763 NZD
Retailer 10$5,789 NZD
Retailer 6$5,794 NZD
Retailer 4$6,057 NZD
Retailer 11$6,225 NZD
Retailer 7$6,243 NZD
Retailer 2$6,287 NZD
Retailer 15$6,290 NZD
Retailer 3$6,669 NZD
Retailer 12$6,885 NZD
Retailer 13$7,392 NZD
Retailer 14$10,100 NZD
NZ Jewellers$10,553 NZD

31 data points across 15 retailers

15 retailers$5,298 NZD to $10,553 NZD

A
Cheapest Retailer
-
$5,298 NZD
A
Retailer 2
-
$5,385 NZD
View
A
Retailer 3
-
$5,763 NZD
View
A
Retailer 4
-
$5,789 NZD
View
A
Retailer 5
-
$5,794 NZD
View
A
Retailer 6
-
$6,057 NZD
View
A
Retailer 7
-
$6,225 NZD
View
Retailer 8
-
$6,243 NZD
View
Price last confirmed 9 days ago
A
Retailer 9
-
$6,287 NZD
View
A
Retailer 10
-
$6,290 NZD
View
A
Retailer 11
-
$6,669 NZD
View
A
Retailer 12
-
$6,885 NZD
View
A
Retailer 13
-
$7,392 NZD
View
B+
Retailer 14
-
$10,100 NZD
View
Most Expensive
B+
NZ Jewellers
ca66ec14-a278-4bb1-b408-71a51fcce9b5 · Nov 5
$10,553 NZD
$5,850 USD
View
14 more retailers have this diamond
Prices start from $5,298 NZDSave up to $5,255 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.

A
1.51ct Marquise
$5,298 NZD