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Marquise|Natural|GIA

1.51ct K SI1 Marquise Natural Diamond

EX • K/SI1 • GIA 5241109438

Certificate GIA 5241109438

Diamond specifications and retailer prices

From €2,945 EUR
As of November 4, 2026
Save €2,393 EUR (45%) vs most expensive(unlock to see where)
9 retailers carry this diamond
Most expensive: €5,338 EUR at Wholesale Diamonds Direct · As of November 6, 2026
View at Wholesale 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 K colour (faint-tinted) and SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 5241109438. Listed at 9 retailers as of November 4, 2026, with prices from €2,945 to €5,338, a €2,393 spread on the same certified stone. Wholesale Diamonds Direct lists it at €5,338. 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 (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
Crown angle40.07°
Pavilion angle40.14°
OriginNatural
Grading LabGIA
CertificateGIA 5241109438
Dimensions11.11 × 5.88 × 3.77 mm
L/W Ratio1.89
Culet sizeNone
Top View
11.11 mm5.88 mm1.51 ctK / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 5241109438
Side View
Table 59.0%Crown 40.07°Girdle: STK-THKPavilion 40.14°Culet: NDepth 64.2%

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 4
Current: €3,917 EUR|Low: €2,945 EUR|High: €5,338 EUR|Avg: €3,741 EUR|-0.3%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Wholesale Diamonds Direct
November 6, 2026
Retailer 5€2,945 EUR
Retailer 4€3,146 EUR
Retailer 7€3,214 EUR
Retailer 8€3,580 EUR
Retailer 2€3,752 EUR
Retailer 6€3,800 EUR
Retailer 1€3,917 EUR
Retailer 3€4,966 EUR
Wholesale Diamonds Direct€5,338 EUR

6 data points across 9 retailers

9 retailers€2,945 EUR to €5,338 EUR

A
Cheapest Retailer
-
€2,945 EUR
A
Retailer 2
-
€3,146 EUR
View
A
Retailer 3
-
€3,214 EUR
View
B+
Retailer 4
-
€3,580 EUR
View
B+
Retailer 5
-
€3,752 EUR
View
B+
Retailer 6
-
€3,800 EUR
View
B+
Retailer 7
-
€3,917 EUR
View
B+
Retailer 8
-
€4,966 EUR
View
Most Expensive
B+
Wholesale Diamonds Direct
668871297 · Nov 6
€5,338 EUR
$5,960 USD
View
8 more retailers have this diamond
Prices start from €2,945 EURSave up to €2,393 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
€2,945 EUR