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Marquise|Natural|GIA

1.20ct J SI1 Marquise Natural Diamond

EX • J/SI1 • GIA 6565379734

Certificate GIA 6565379734

Diamond specifications and retailer prices

From €3,018 EUR
As of November 6, 2026
Save €3,122 EUR (51%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: €6,141 EUR at NZ Jewellers · As of November 5, 2026
View at NZ Jewellers

About this 1.2ct natural marquise diamond

This 1.2ct natural marquise sits in the classic one-carat band, graded J 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 6565379734. Listed at 15 retailers as of November 5, 2026, with prices from €3,018 to €6,141, a €3,122 spread on the same certified stone. NZ Jewellers lists it at €6,141. 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

1.20
Carat
J
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryVery Good
FluorescenceMedium
OriginNatural
Grading LabGIA
CertificateGIA 6565379734
Dimensions10.33 × 5.62 × 3.42 mm
L/W Ratio1.84
Girdle conditionFaceted
Culet sizeNone
Key to symbols
Feather, Crystal, Cavity, Knot, Needle
Top View
10.33 mm5.62 mm1.20 ctJ / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceMedium
CertificateGIA 6565379734
Side View
Table 63.0%CrownGirdle: VTN-VTKPavilionCulet: NoneDepth 60.9%

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 6
Current: €6,141 EUR|Low: €3,018 EUR|High: €6,141 EUR|Avg: €3,847 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
November 6, 2026
Retailer 7€3,018 EUR
Retailer 11€3,063 EUR
Retailer 12€3,156 EUR
Retailer 15€3,354 EUR
Retailer 4€3,446 EUR
Retailer 10€3,507 EUR
Retailer 13€3,507 EUR
Retailer 8€3,583 EUR
Retailer 3€3,645 EUR
Retailer 5€3,645 EUR
Retailer 6€3,771 EUR
Retailer 2€3,904 EUR
Retailer 14€5,143 EUR
Retailer 9€5,894 EUR
NZ Jewellers€6,141 EUR

35 data points across 15 retailers

15 retailers€3,018 EUR to €6,141 EUR

B+
Cheapest Retailer
-
€3,018 EUR
B+
Retailer 2
-
€3,063 EUR
View
B+
Retailer 3
-
€3,156 EUR
View
B
Retailer 4
-
€3,354 EUR
View
B
Retailer 5
-
€3,446 EUR
View
B
Retailer 6
-
€3,507 EUR
View
B
Retailer 7
-
€3,507 EUR
View
B
Retailer 8
-
€3,583 EUR
View
B
Retailer 9
-
€3,645 EUR
View
B
Retailer 10
-
€3,645 EUR
View
B
Retailer 11
-
€3,771 EUR
View
B
Retailer 12
-
€3,904 EUR
View
B
Retailer 13
-
€5,143 EUR
View
B
Retailer 14
-
€5,894 EUR
View
Most Expensive
B
NZ Jewellers
617fe7ef-dabd-4410-8bcc-3b14343cc3c6 · Nov 5
€6,141 EUR
$6,856 USD
View
14 more retailers have this diamond
Prices start from €3,018 EURSave up to €3,122 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+
1.20ct Marquise
€3,018 EUR