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Marquise|Natural|GIA

0.66ct F SI1 Marquise Natural Diamond

ID • F/SI1 • GIA 2566234983

Certificate GIA 2566234983

Diamond specifications and retailer prices

From €1,340 EUR
$1,503 USD
As of November 2, 2026
Save €718 EUR (35%) vs most expensive(unlock to see where)
7 retailers carry this diamond
Most expensive: €2,591 EUR at NZ Jewellers · As of September 20, 2026
View at NZ Jewellers

About this 0.66ct natural marquise diamond

This 0.66ct natural marquise sits in the half to three-quarter carat band, graded F colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 2566234983. Listed at 7 retailers as of November 2, 2026, with a 54% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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

0.66
Carat
F
Colour
SI1
Clarity
Ideal
Cut (retailer stated)

Specifications

Cut (retailer stated)Ideal
PolishExcellent
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 2566234983
Dimensions8.53 × 4.50 × 2.84 mm
L/W Ratio1.90
Girdle conditionFaceted
Culet sizeNone
Key to symbols
Crystal, Cloud
Top View
8.53 mm4.50 mm0.66 ctF / SI1
OriginNatural
CutIdeal
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 2566234983
Side View
Table 59.0%CrownGirdle: MED-THKPavilionCulet: NoneDepth 63.2%

Caratlytics Score

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B
Good
Decent quality, room for better deals
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 2
Current: €2,591 EUR|Low: €606 EUR|High: €2,591 EUR|Avg: €1,160 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
November 2, 2026
Retailer 10€635 EUR
Retailer 12€648 EUR
Retailer 14€826 EUR
Retailer 6€837 EUR
Retailer 5€841 EUR
Retailer 3€945 EUR
Retailer 11€953 EUR
Retailer 4€1,086 EUR
Retailer 8€1,340 EUR
Retailer 9€1,346 EUR
Retailer 7€1,382 EUR
Retailer 13€1,513 EUR
Retailer 2€2,058 EUR
NZ Jewellers€2,591 EUR

31 data points across 14 retailers

7 retailers€1,340 EUR to €2,058 EUR

Retailer 1
-
€826 EUR
$927 USD
Price last confirmed 42 days ago
Retailer 2
-
€953 EUR
$1,069 USD
View
Price last confirmed 41 days ago
B
Retailer 3
-
€1,340 EUR
$1,503 USD
View
B
Retailer 4
-
€1,346 EUR
$1,510 USD
View
B
Retailer 5
-
€1,382 EUR
$1,550 USD
View
B
Retailer 6
-
€2,058 EUR
£1,818 GBP
View
Most Expensive
NZ Jewellers
3aaa573a-0312-41d3-90fb-93e3920f7c82 · Sep 20
€2,591 EUR
$2,906 USD
View
Price under review
6 more retailers have this diamond
Prices start from €1,340 EURSave up to €718 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
0.66ct Marquise
€1,340 EUR