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Marquise|Natural|GIA

1.51ct I SI2 Marquise Natural Diamond

EX • I/SI2 • GIA 5566477733

Certificate GIA 5566477733

Diamond specifications and retailer prices

From €6,018 EUR
SGD 9,121 SGD
As of November 1, 2026
Save €2,513 EUR (29%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: €8,531 EUR at Diamonds Direct · As of November 1, 2026
View at Diamonds Direct

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 SI2 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 5566477733. Listed at 12 retailers as of November 1, 2026, with prices from €6,018 to €8,531, a €2,513 spread on the same certified stone. Diamonds Direct lists it at €8,531. 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
Colour
SI2
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishVery Good
SymmetryExcellent
FluorescenceNone
Crown angle39.9°
Pavilion angle38.11°
OriginNatural
Grading LabGIA
CertificateGIA 5566477733
Dimensions11.22 × 5.93 × 3.64 mm
L/W Ratio1.89
Culet sizeNone
Top View
11.22 mm5.93 mm1.51 ctI / SI2
OriginNatural
CutExcellent
PolishVery Good
SymmetryExcellent
FluorescenceNone
CertificateGIA 5566477733
Side View
Table 59.0%Crown 39.9°Girdle: MED-THKPavilion 38.11°Culet: NoneDepth 61.5%

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: Nov 1
Current: €8,531 EUR|Low: €6,018 EUR|High: €8,531 EUR|Avg: €6,977 EUR
Diamonds Direct
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
November 3, 2026
Retailer 4€6,018 EUR
Retailer 7€6,249 EUR
Retailer 9€6,265 EUR
Retailer 8€6,277 EUR
Retailer 12€6,368 EUR
Retailer 11€6,456 EUR
Retailer 2€6,694 EUR
Retailer 3€7,497 EUR
Retailer 10€7,557 EUR
Retailer 6€7,608 EUR
Retailer 5€7,669 EUR
Diamonds Direct€8,531 EUR

31 data points across 12 retailers

12 retailers€6,018 EUR to €8,531 EUR

A
Cheapest Retailer
-
€6,018 EUR
SGD 9,121 SGD
A
Retailer 2
-
€6,249 EUR
$7,009 USD
View
A
Retailer 3
-
€6,265 EUR
SGD 9,496 SGD
View
B+
Retailer 4
-
€6,277 EUR
$7,040 USD
View
B+
Retailer 5
-
€6,368 EUR
$7,143 USD
View
B+
Retailer 6
-
€6,456 EUR
$7,241 USD
View
B+
Retailer 7
-
€6,694 EUR
£5,911 GBP
View
B+
Retailer 8
-
€7,497 EUR
$8,409 USD
View
B+
Retailer 9
-
€7,557 EUR
$8,476 USD
View
Retailer 10
-
€7,608 EUR
$8,533 USD
View
Price last confirmed 7 days ago
B+
Retailer 11
-
€7,669 EUR
View
Most Expensive
B
Diamonds Direct
1129909 · Nov 1
€8,531 EUR
$9,568 USD
View
11 more retailers have this diamond
Prices start from €6,018 EURSave up to €2,513 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
€6,018 EUR