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Marquise|Natural|GIA

1.20ct K SI1 Marquise Natural Diamond

EX • K/SI1 • GIA 6542456377

Certificate GIA 6542456377

Diamond specifications and retailer prices

From €2,522 EUR
As of November 6, 2026
Save €3,287 EUR (57%) vs most expensive(unlock to see where)
20 retailers carry this diamond
Most expensive: €5,809 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 K colour (faint-tinted) and SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 6542456377. Listed at 20 retailers as of November 5, 2026, with prices from €2,522 to €5,809, a €3,287 spread on the same certified stone. NZ Jewellers lists it at €5,809. 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
K
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryVery Good
FluorescenceFaint
Crown angle38.23°
Pavilion angle39.12°
OriginNatural
Grading LabGIA
CertificateGIA 6542456377
Dimensions10.40 × 5.53 × 3.46 mm
L/W Ratio1.88
Girdle conditionVery Thick
Key to symbols
Feather, Crystal, Needle
Top View
10.40 mm5.53 mm1.20 ctK / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceFaint
CertificateGIA 6542456377
Side View
Table 60.0%Crown 38.23°Girdle: THK-VTKPavilion 39.12°Culet: NoneDepth 62.7%

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: €5,809 EUR|Low: €2,522 EUR|High: €5,809 EUR|Avg: €3,657 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 6, 2026
Retailer 8€2,522 EUR
Retailer 6€2,683 EUR
Retailer 12€2,732 EUR
Retailer 13€3,021 EUR
Retailer 14€3,021 EUR
Retailer 4€3,137 EUR
Retailer 2€3,235 EUR
Retailer 5€3,426 EUR
Retailer 7€3,430 EUR
Retailer 3€3,486 EUR
Retailer 11€3,887 EUR
Retailer 9€4,070 EUR
Retailer 10€5,562 EUR
NZ Jewellers€5,809 EUR

36 data points across 14 retailers

20 retailers€2,522 EUR to €5,809 EUR

B+
Cheapest Retailer
-
€2,522 EUR
B+
Retailer 2
-
€2,683 EUR
View
B+
Retailer 3
-
€2,732 EUR
View
B
Retailer 4
-
€2,815 EUR
View
B
Retailer 5
-
€2,915 EUR
View
B
Retailer 6
-
€3,021 EUR
View
Retailer 7
-
€3,021 EUR
View
Price last confirmed 8 days ago
B
Retailer 8
-
€3,032 EUR
View
B
Retailer 9
-
€3,118 EUR
View
B
Retailer 10
-
€3,137 EUR
View
B
Retailer 11
-
€3,235 EUR
View
B
Retailer 12
-
€3,426 EUR
View
Retailer 13
-
€3,426 EUR
View
Price last confirmed 28 days ago
B
Retailer 14
-
€3,430 EUR
View
B
Retailer 15
-
€3,486 EUR
View
Retailer 16
-
€3,776 EUR
View
Price last confirmed 22 days ago
B
Retailer 17
-
€3,887 EUR
View
B
Retailer 18
-
€4,070 EUR
View
B
Retailer 19
-
€5,562 EUR
View
Most Expensive
C
NZ Jewellers
11a171f1-1057-4f87-b4c5-efd38b187b1f · Nov 5
€5,809 EUR
$6,486 USD
View
19 more retailers have this diamond
Prices start from €2,522 EURSave up to €3,287 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
€2,522 EUR