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Round|Natural|GIA

1.21ct I SI2 Round Natural Diamond

EX • I/SI2 • GIA 5563654767

Certificate GIA 5563654767

Diamond specifications and retailer prices

From €1,914 EUR
As of November 1, 2026
Save €2,383 EUR (55%) vs most expensive(unlock to see where)
18 retailers carry this diamond
Most expensive: €5,373 EUR at NZ Jewellers · As of October 30, 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 I colour (near-colourless) and SI2 clarity (slightly-included), with a top-tier cut grade and certified by GIA 5563654767. Listed at 18 retailers as of November 1, 2026, with a 125% 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

1.21
Carat
I
Colour
SI2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36°
Pavilion angle40.6°
OriginNatural
Grading LabGIA
CertificateGIA 5563654767
Dimensions6.78 × 6.74 × 4.23 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizeNone
Top View
6.78 mm6.74 mm1.21 ctI / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 5563654767
Side View
Table 57.0%Crown 36°Girdle: MED-STKPavilion 40.6°Culet: NoneDepth 62.5%

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 1
Current: €5,373 EUR|Low: €1,834 EUR|High: €5,373 EUR|Avg: €2,700 EUR|+3.5%
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
Retailer 16
Retailer 17
Retailer 18
Retailer 19
November 2, 2026
Retailer 3€1,914 EUR
Retailer 12€1,948 EUR
Retailer 18€2,111 EUR
Retailer 8€2,161 EUR
Retailer 14€2,221 EUR
Retailer 17€2,372 EUR
Retailer 7€2,396 EUR
Retailer 6€2,405 EUR
Retailer 10€2,482 EUR
Retailer 16€2,570 EUR
Retailer 11€2,578 EUR
Retailer 9€2,660 EUR
Retailer 2€2,731 EUR
Retailer 4€2,768 EUR
Retailer 5€2,966 EUR
Retailer 13€3,002 EUR
Retailer 19€3,146 EUR
Retailer 15€4,297 EUR
NZ Jewellers€5,373 EUR

13 data points across 19 retailers

18 retailers€1,914 EUR to €4,297 EUR

A
Cheapest Retailer
-
€1,914 EUR
A
Retailer 2
-
€1,948 EUR
View
A
Retailer 3
-
€2,111 EUR
View
A
Retailer 4
-
€2,161 EUR
View
A
Retailer 5
-
€2,221 EUR
View
A
Retailer 6
-
€2,396 EUR
View
A
Retailer 7
-
€2,405 EUR
View
Retailer 8
-
€2,482 EUR
View
Price last confirmed 9 days ago
B+
Retailer 9
-
€2,570 EUR
View
Retailer 10
-
€2,578 EUR
View
Price last confirmed 9 days ago
B+
Retailer 11
-
€2,660 EUR
View
B+
Retailer 12
-
€2,731 EUR
View
Retailer 13
-
€2,768 EUR
View
Price last confirmed 7 days ago
Retailer 14
-
€2,966 EUR
View
Price last confirmed 7 days ago
B+
Retailer 15
-
€3,002 EUR
View
B+
Retailer 16
-
€3,146 EUR
View
B
Retailer 17
-
€4,297 EUR
View
Most Expensive
NZ Jewellers
70cd373a-5ba6-4d13-8090-58c9fbdf3b5b · Oct 30
€5,373 EUR
$5,999 USD
View
Price last confirmed 8 days ago
17 more retailers have this diamond
Prices start from €1,914 EURSave up to €2,383 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
€1,914 EUR