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Marquise|Natural|GIA

1.51ct H SI1 Marquise Natural Diamond

EX • H/SI1 • GIA 6555830427

Certificate GIA 6555830427

Diamond specifications and retailer prices

From €8,209 EUR
As of November 4, 2026
Save €7,404 EUR (47%) vs most expensive(unlock to see where)
22 retailers carry this diamond
Most expensive: €15,612 EUR at NZ Jewellers · As of November 5, 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 H 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 6555830427. Listed at 22 retailers as of November 4, 2026, with prices from €8,209 to €15,612, a €7,404 spread on the same certified stone. NZ Jewellers lists it at €15,612. 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
H
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
Crown angle39.8°
Pavilion angle39.44°
OriginNatural
Grading LabGIA
CertificateGIA 6555830427
Dimensions11.45 × 5.91 × 3.74 mm
L/W Ratio1.94
Culet sizeNone
Top View
11.45 mm5.91 mm1.51 ctH / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 6555830427
Side View
Table 58.0%Crown 39.8°Girdle: STK-THKPavilion 39.44°Culet: NoneDepth 63.3%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 4
Current: €10,022 EUR|Low: €8,209 EUR|High: €14,805 EUR|Avg: €11,285 EUR|-1.3%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
November 7, 2026
Retailer 6€8,209 EUR
Retailer 10€9,367 EUR
Retailer 1€10,022 EUR
Retailer 3€10,148 EUR
Retailer 8€10,175 EUR
Retailer 2€10,304 EUR
Retailer 11€10,448 EUR
Retailer 9€11,410 EUR
Retailer 7€11,754 EUR
Retailer 4€13,666 EUR
Retailer 5€14,590 EUR

46 data points across 11 retailers

22 retailers€8,209 EUR to €15,612 EUR

B+
Cheapest Retailer
-
€8,209 EUR
B+
Retailer 2
-
€8,691 EUR
View
B+
Retailer 3
-
€8,794 EUR
View
B
Retailer 4
-
€9,257 EUR
View
Retailer 5
-
€9,367 EUR
View
Price last confirmed 9 days ago
B
Retailer 6
-
€9,367 EUR
View
Final sale: no returns
B
Retailer 7
-
€10,022 EUR
View
B
Retailer 8
-
€10,148 EUR
View
Retailer 9
-
€10,175 EUR
View
Price last confirmed 15 days ago
B
Retailer 10
-
€10,304 EUR
View
B
Retailer 11
-
€10,448 EUR
View
B
Retailer 12
-
€10,954 EUR
View
B
Retailer 13
-
€10,954 EUR
View
B
Retailer 14
-
€11,160 EUR
View
B
Retailer 15
-
€11,321 EUR
View
B
Retailer 16
-
€11,410 EUR
View
B
Retailer 17
-
€11,709 EUR
View
B
Retailer 18
-
€11,754 EUR
View
Retailer 19
-
€12,324 EUR
View
Price last confirmed 15 days ago
B
Retailer 20
-
€13,666 EUR
View
B
Retailer 21
-
€14,590 EUR
View
Most Expensive
B
NZ Jewellers
ae7b53dc-56f9-4716-9037-2b4f7d008ff1 · Nov 5
€15,612 EUR
$17,431 USD
View
21 more retailers have this diamond
Prices start from €8,209 EURSave up to €7,404 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.

B+
1.51ct Marquise
€8,209 EUR