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Round|Natural|GIA

1.21ct J SI1 Round Natural Diamond

EX • J/SI1 • GIA 6552175864

Certificate GIA 6552175864

Diamond specifications and retailer prices

From €1,606 EUR
As of November 6, 2026
Save €2,900 EUR (64%) vs most expensive(unlock to see where)
18 retailers carry this diamond
Most expensive: €4,506 EUR at NZ Jewellers · As of November 2, 2026
View at NZ Jewellers

About this 1.21ct natural round diamond

This 1.21ct natural round sits in the classic one-carat band, graded J colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by GIA 6552175864. Listed at 18 retailers as of November 2, 2026, with prices from €1,606 to €4,506, a €2,900 spread on the same certified stone. NZ Jewellers lists it at €4,506. 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

1.21
Carat
J
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceStrong
Crown angle35.5°
Pavilion angle41.2°
OriginNatural
Grading LabGIA
CertificateGIA 6552175864
Dimensions6.79 × 6.83 × 4.25 mm
L/W Ratio1.01
Girdle conditionSlightly Thick
Top View
6.79 mm6.83 mm1.21 ctJ / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceStrong
CertificateGIA 6552175864
Side View
Table 57.0%Crown 35.5°Girdle: MediumPavilion 41.2°Culet: NoneDepth 62.3%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 6
Current: €4,506 EUR|Low: €1,606 EUR|High: €4,506 EUR|Avg: €2,431 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 7€1,606 EUR
Retailer 13€1,957 EUR
Retailer 12€1,961 EUR
Retailer 6€1,988 EUR
Retailer 11€2,040 EUR
Retailer 3€2,155 EUR
Retailer 4€2,155 EUR
Retailer 2€2,254 EUR
Retailer 9€2,266 EUR
Retailer 5€2,486 EUR
Retailer 8€2,511 EUR
Retailer 14€2,648 EUR
Retailer 10€3,765 EUR
NZ Jewellers€4,506 EUR

28 data points across 14 retailers

18 retailers€1,606 EUR to €4,506 EUR

A
Cheapest Retailer
-
€1,606 EUR
B+
Retailer 2
-
€1,947 EUR
View
B+
Retailer 3
-
€1,957 EUR
View
B+
Retailer 4
-
€1,961 EUR
View
B+
Retailer 5
-
€1,988 EUR
View
Final sale: no returns
B+
Retailer 6
-
€2,032 EUR
View
B+
Retailer 7
-
€2,040 EUR
View
B+
Retailer 8
-
€2,145 EUR
View
B+
Retailer 9
-
€2,155 EUR
View
Retailer 10
-
€2,155 EUR
View
Price last confirmed 9 days ago
B+
Retailer 11
-
€2,254 EUR
View
B+
Retailer 12
-
€2,266 EUR
View
B
Retailer 13
-
€2,486 EUR
View
B+
Retailer 14
-
€2,511 EUR
View
B
Retailer 15
-
€2,648 EUR
View
Retailer 16
-
€2,653 EUR
View
Price last confirmed 31 days ago
B
Retailer 17
-
€3,765 EUR
View
Most Expensive
B
NZ Jewellers
d4b92014-6fab-4719-bdf5-d39cdee6a9a9 · Nov 2
€4,506 EUR
$5,031 USD
View
17 more retailers have this diamond
Prices start from €1,606 EURSave up to €2,900 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.

A
1.21ct Round
€1,606 EUR