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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 €3,017 EUR
$3,371 USD
As of November 2, 2026
Save €3,119 EUR (51%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: €6,137 EUR at NZ Jewellers · As of October 30, 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 October 30, 2026, with prices from €3,017 to €6,137, a €3,119 spread on the same certified stone. NZ Jewellers lists it at €6,137. 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
Color
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 2
Current: €6,137 EUR|Low: €3,017 EUR|High: €6,137 EUR|Avg: €3,833 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 2, 2026
Retailer 7€3,017 EUR
Retailer 11€3,061 EUR
Retailer 12€3,154 EUR
Retailer 15€3,352 EUR
Retailer 4€3,444 EUR
Retailer 10€3,504 EUR
Retailer 13€3,504 EUR
Retailer 8€3,608 EUR
Retailer 3€3,643 EUR
Retailer 5€3,643 EUR
Retailer 6€3,768 EUR
Retailer 2€3,920 EUR
Retailer 14€5,140 EUR
Retailer 9€5,891 EUR
NZ Jewellers€6,137 EUR

31 data points across 15 retailers

15 retailers€3,017 EUR to €6,137 EUR

B+
Cheapest Retailer
-
€3,017 EUR
$3,371 USD
B+
Retailer 2
-
€3,061 EUR
CA$4,750 CAD
View
B+
Retailer 3
-
€3,154 EUR
$3,524 USD
View
B
Retailer 4
-
€3,352 EUR
$3,745 USD
View
B
Retailer 5
-
€3,444 EUR
$3,848 USD
View
B
Retailer 6
-
€3,504 EUR
$3,915 USD
View
B
Retailer 7
-
€3,504 EUR
$3,915 USD
View
B
Retailer 8
-
€3,608 EUR
£3,174 GBP
View
B
Retailer 9
-
€3,643 EUR
$4,070 USD
View
B
Retailer 10
-
€3,643 EUR
$4,070 USD
View
B
Retailer 11
-
€3,768 EUR
$4,210 USD
View
B
Retailer 12
-
€3,920 EUR
View
B
Retailer 13
-
€5,140 EUR
$5,742 USD
View
B
Retailer 14
-
€5,891 EUR
£5,182 GBP
View
Most Expensive
B
NZ Jewellers
617fe7ef-dabd-4410-8bcc-3b14343cc3c6 · Oct 30
€6,137 EUR
$6,856 USD
View
14 more retailers have this diamond
Prices start from €3,017 EURSave up to €3,119 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
€3,017 EUR