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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 €2,650 EUR
$2,972 USD
As of November 2, 2026
Save €2,804 EUR (51%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: €5,454 EUR at NZ Jewellers · As of October 30, 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 October 30, 2026, with prices from €2,650 to €5,454, a €2,804 spread on the same certified stone. NZ Jewellers lists it at €5,454. 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
Color
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: €5,454 EUR|Low: €2,640 EUR|High: €5,454 EUR|Avg: €3,449 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 2, 2026
Retailer 7€2,650 EUR
Retailer 12€2,836 EUR
Retailer 15€2,836 EUR
Retailer 14€2,945 EUR
Retailer 6€3,050 EUR
Retailer 4€3,219 EUR
Retailer 5€3,219 EUR
Retailer 9€3,244 EUR
Retailer 13€3,272 EUR
Retailer 3€3,326 EUR
Retailer 16€3,356 EUR
Retailer 2€3,447 EUR
Retailer 8€3,547 EUR
Retailer 11€3,848 EUR
Retailer 10€5,235 EUR
NZ Jewellers€5,454 EUR

42 data points across 16 retailers

16 retailers€2,650 EUR to €5,454 EUR

B+
Cheapest Retailer
-
€2,650 EUR
$2,972 USD
B+
Retailer 2
-
€2,836 EUR
$3,181 USD
View
B+
Retailer 3
-
€2,836 EUR
$3,181 USD
View
B+
Retailer 4
-
€2,945 EUR
$3,303 USD
View
B
Retailer 5
-
€3,050 EUR
$3,421 USD
View
B+
Retailer 6
-
€3,219 EUR
$3,610 USD
View
B+
Retailer 7
-
€3,219 EUR
$3,610 USD
View
B+
Retailer 8
-
€3,244 EUR
£2,865 GBP
View
B
Retailer 9
-
€3,272 EUR
$3,670 USD
View
B
Retailer 10
-
€3,326 EUR
$3,730 USD
View
Retailer 11
-
€3,356 EUR
A$5,792 AUD
View
Price last confirmed 29 days ago
B
Retailer 12
-
€3,447 EUR
View
Retailer 13
-
€3,547 EUR
$3,978 USD
View
Price last confirmed 10 days ago
B
Retailer 14
-
€3,848 EUR
ZAR 69,719 ZAR
View
B
Retailer 15
-
€5,235 EUR
£4,623 GBP
View
Most Expensive
B
NZ Jewellers
8949f649-d9ed-47ef-bd18-7dc83a964ae4 · Oct 30
€5,454 EUR
$6,117 USD
View
15 more retailers have this diamond
Prices start from €2,650 EURSave up to €2,804 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
€2,650 EUR