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Marquise|Natural|GIA

1.51ct E SI2 Marquise Natural Diamond

ID • E/SI2 • GIA 6551704674

Certificate GIA 6551704674

Diamond specifications and retailer prices

From $12,136 NZD
£5,386 GBP
As of October 31, 2026
Save $11,229 NZD (48%) vs most expensive(unlock to see where)
8 retailers carry this diamond
Most expensive: $23,366 NZD at NZ Jewellers · As of October 30, 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 E colour (colourless) and SI2 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 6551704674. Listed at 8 retailers as of October 30, 2026, with prices from $12,136 to $23,366, a $11,229 spread on the same certified stone. NZ Jewellers lists it at $23,366. 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
E
Colour
SI2
Clarity
Ideal
Cut (retailer stated)

Specifications

Cut (retailer stated)Ideal
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 6551704674
Dimensions10.50 × 5.91 × 3.95 mm
L/W Ratio1.78
Top View
10.50 mm5.91 mm1.51 ctE / SI2
OriginNatural
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 6551704674
Side View
Table 61.0%CrownGirdle: Very ThickPavilionCulet: NoneDepth 66.8%

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 31
Current: $23,366 NZD|Low: $12,063 NZD|High: $23,646 NZD|Avg: $14,361 NZD|-1.2%
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
October 31, 2026
Retailer 2$12,136 NZD
Retailer 7$12,239 NZD
Retailer 8$12,438 NZD
Retailer 3$13,204 NZD
Retailer 5$13,971 NZD
Retailer 4$14,186 NZD
Retailer 6$19,575 NZD
NZ Jewellers$23,366 NZD

37 data points across 8 retailers

8 retailers$12,136 NZD to $23,366 NZD

A
Cheapest Retailer
-
$12,136 NZD
£5,386 GBP
A
Retailer 2
-
$12,239 NZD
$6,898 USD
View
A
Retailer 3
-
$12,438 NZD
$7,010 USD
View
A
Retailer 4
-
$13,204 NZD
£5,860 GBP
View
A
Retailer 5
-
$13,971 NZD
$7,874 USD
View
A
Retailer 6
-
$14,186 NZD
$7,995 USD
View
B+
Retailer 7
-
$19,575 NZD
£8,687 GBP
View
Most Expensive
B
NZ Jewellers
35a4231b-b749-454d-af27-01c6914e6792 · Oct 30
$23,366 NZD
$13,169 USD
View
7 more retailers have this diamond
Prices start from $12,136 NZDSave up to $11,229 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
$12,136 NZD