Marquise|Natural|GIA

1.51ct E SI2 Marquise Natural Diamond

ID • E/SI2 • GIA 6551704674

Certificate GIA 6551704674

Diamond specifications and retailer prices

From $6,799 USD
£5,353 GBP
As of October 28, 2026
Save $6,370 USD (48%) vs most expensive(unlock to see where)
8 retailers carry this diamond
Most expensive: $13,169 USD at NZ Jewellers · As of October 27, 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 27, 2026, with prices from $6,799 to $13,169, a $6,370 spread on the same certified stone. NZ Jewellers lists it at $13,169. 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
Color
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
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 28
Current: $13,169 USD|Low: $6,799 USD|High: $13,327 USD|Avg: $8,035 USD|-1.2%
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
October 29, 2026
Retailer 7$6,799 USD
Retailer 6$6,898 USD
Retailer 8$7,010 USD
Retailer 4$7,462 USD
Retailer 3$7,874 USD
Retailer 2$7,995 USD
Retailer 5$11,032 USD
NZ Jewellers$13,169 USD

35 data points across 8 retailers

8 retailers$6,799 USD to $13,169 USD

A
Cheapest Retailer
-
$6,799 USD
£5,353 GBP
A
Retailer 2
-
$6,898 USD
View
A
Retailer 3
-
$7,010 USD
View
A
Retailer 4
-
$7,462 USD
£5,876 GBP
View
A
Retailer 5
-
$7,874 USD
View
A
Retailer 6
-
$7,995 USD
View
B+
Retailer 7
-
$11,032 USD
£8,687 GBP
View
Most Expensive
B
NZ Jewellers
35a4231b-b749-454d-af27-01c6914e6792 · Oct 27
$13,169 USD
View
7 more retailers have this diamond
Prices start from $6,799 USDSave up to $6,370 USD

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
$6,799 USD