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Marquise|Natural|GIA

1.51ct I SI1 Marquise Natural Diamond

EX • I/SI1 • GIA 5566372644

Certificate GIA 5566372644

Diamond specifications and retailer prices

From €5,797 EUR
HK$50,600 HKD
As of November 1, 2026
Save €7,099 EUR (55%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: €12,896 EUR 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 I colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 5566372644. Listed at 11 retailers as of October 30, 2026, with prices from €5,797 to €12,896, a €7,099 spread on the same certified stone. NZ Jewellers lists it at €12,896. 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
I
Color
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishVery Good
SymmetryExcellent
FluorescenceStrong
OriginNatural
Grading LabGIA
CertificateGIA 5566372644
Dimensions11.71 × 5.87 × 3.69 mm
L/W Ratio1.99
Girdle conditionMedium to Very Thick
Key to symbols
Crystal, Feather, Needle
Top View
11.71 mm5.87 mm1.51 ctI / SI1
OriginNatural
CutExcellent
PolishVery Good
SymmetryExcellent
FluorescenceStrong
CertificateGIA 5566372644
Side View
Table 60.0%CrownGirdle: MED-VTKPavilionCulet: NoneDepth 62.8%

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: Nov 1
Current: €12,896 EUR|Low: €5,751 EUR|High: €13,820 EUR|Avg: €8,201 EUR|-6.7%
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
November 2, 2026
Retailer 7€5,797 EUR
Retailer 2€5,897 EUR
Retailer 9€6,230 EUR
Retailer 8€6,817 EUR
Retailer 3€7,316 EUR
Retailer 4€7,641 EUR
Retailer 6€7,711 EUR
Retailer 10€7,941 EUR
Retailer 5€10,746 EUR
NZ Jewellers€12,896 EUR

35 data points across 10 retailers

11 retailers€5,797 EUR to €12,896 EUR

A
Cheapest Retailer
-
€5,797 EUR
HK$50,600 HKD
A
Retailer 2
-
€5,897 EUR
₹627,397 INR
View
B+
Retailer 3
-
€6,230 EUR
$6,960 USD
View
Final sale: no returns
B+
Retailer 4
-
€6,817 EUR
$7,616 USD
View
Retailer 5
-
€6,829 EUR
SGD 10,310 SGD
View
Price last confirmed 21 days ago
B+
Retailer 6
-
€7,316 EUR
£6,436 GBP
View
B+
Retailer 7
-
€7,641 EUR
£6,722 GBP
View
B
Retailer 8
-
€7,711 EUR
$8,615 USD
View
B
Retailer 9
-
€7,941 EUR
$8,872 USD
View
B
Retailer 10
-
€10,746 EUR
£9,453 GBP
View
Most Expensive
B
NZ Jewellers
c46d6811-9a3a-4d37-b07f-f337090d5828 · Oct 30
€12,896 EUR
$14,408 USD
View
10 more retailers have this diamond
Prices start from €5,797 EURSave up to €7,099 EUR

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
€5,797 EUR