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Marquise|Natural|GIA

1.00ct I SI1 Marquise Natural Diamond

EX • I/SI1 • GIA 6541818171

Certificate GIA 6541818171

Diamond specifications and retailer prices

From €2,659 EUR
As of November 2, 2026
Save €2,813 EUR (51%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: €5,472 EUR at NZ Jewellers · As of November 3, 2026
View at NZ Jewellers

About this 1ct natural marquise diamond

This 1ct natural marquise sits in the classic one-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 6541818171. Listed at 16 retailers as of November 2, 2026, with prices from €2,659 to €5,472, a €2,813 spread on the same certified stone. NZ Jewellers lists it at €5,472. 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

1.00
Carat
I
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 6541818171
Dimensions9.77 × 5.26 × 3.19 mm
L/W Ratio1.86
Top View
9.77 mm5.26 mm1.00 ctI / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 6541818171
Side View
Table 60.0%CrownGirdle: THK-XTKPavilionCulet: NoneDepth 60.6%

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 2
Current: €5,472 EUR|Low: €2,649 EUR|High: €5,472 EUR|Avg: €3,461 EUR
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Retailer 14
Retailer 15
Retailer 16
November 4, 2026
Retailer 7€2,659 EUR
Retailer 12€2,845 EUR
Retailer 15€2,845 EUR
Retailer 14€2,955 EUR
Retailer 6€3,060 EUR
Retailer 4€3,229 EUR
Retailer 5€3,229 EUR
Retailer 2€3,250 EUR
Retailer 13€3,283 EUR
Retailer 3€3,337 EUR
Retailer 16€3,367 EUR
Retailer 9€3,451 EUR
Retailer 8€3,558 EUR
Retailer 11€3,860 EUR
Retailer 10€5,252 EUR
NZ Jewellers€5,472 EUR

43 data points across 16 retailers

16 retailers€2,659 EUR to €5,472 EUR

B+
Cheapest Retailer
-
€2,659 EUR
B+
Retailer 2
-
€2,845 EUR
View
B+
Retailer 3
-
€2,845 EUR
View
B+
Retailer 4
-
€2,955 EUR
View
B
Retailer 5
-
€3,060 EUR
View
B+
Retailer 6
-
€3,229 EUR
View
B+
Retailer 7
-
€3,229 EUR
View
B+
Retailer 8
-
€3,250 EUR
View
B
Retailer 9
-
€3,283 EUR
View
B
Retailer 10
-
€3,337 EUR
View
Retailer 11
-
€3,367 EUR
View
Price last confirmed 31 days ago
B
Retailer 12
-
€3,451 EUR
View
Retailer 13
-
€3,558 EUR
View
Price last confirmed 12 days ago
B
Retailer 14
-
€3,860 EUR
View
B
Retailer 15
-
€5,252 EUR
View
Most Expensive
B
NZ Jewellers
8949f649-d9ed-47ef-bd18-7dc83a964ae4 · Nov 3
€5,472 EUR
$6,117 USD
View
15 more retailers have this diamond
Prices start from €2,659 EURSave up to €2,813 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+
1.00ct Marquise
€2,659 EUR