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Round|Natural|GIA

1.21ct M SI1 Round Natural Diamond

EX • M/SI1 • GIA 2556636452

Certificate GIA 2556636452

Diamond specifications and retailer prices

From €1,205 EUR
As of November 4, 2026
Save €1,966 EUR (62%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: €3,171 EUR at NZ Jewellers · As of November 5, 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 M colour (faint-tinted) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by GIA 2556636452. Listed at 11 retailers as of November 4, 2026, with prices from €1,205 to €3,171, a €1,966 spread on the same certified stone. NZ Jewellers lists it at €3,171. 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
M
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle31.5°
Pavilion angle41°
OriginNatural
Grading LabGIA
CertificateGIA 2556636452
Dimensions6.93 × 6.88 × 4.13 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizeNone
Key to symbols
Feather, Twinning Wisp
Top View
6.93 mm6.88 mm1.21 ctM / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 2556636452
Side View
Table 59.0%Crown 31.5°Girdle: Slightly ThickPavilion 41°Culet: NoneDepth 59.8%

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 4
Current: €3,171 EUR|Low: €1,205 EUR|High: €3,239 EUR|Avg: €1,564 EUR|-2.1%
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
November 6, 2026
Retailer 6€1,205 EUR
Retailer 2€1,278 EUR
Retailer 11€1,286 EUR
Retailer 7€1,300 EUR
Retailer 9€1,300 EUR
Retailer 8€1,360 EUR
Retailer 10€1,385 EUR
Retailer 3€1,500 EUR
Retailer 5€1,586 EUR
Retailer 4€1,794 EUR
NZ Jewellers€3,171 EUR

43 data points across 11 retailers

11 retailers€1,205 EUR to €3,171 EUR

A
Cheapest Retailer
-
€1,205 EUR
A
Retailer 2
-
€1,278 EUR
View
A
Retailer 3
-
€1,286 EUR
View
Retailer 4
-
€1,300 EUR
View
Price last confirmed 8 days ago
A
Retailer 5
-
€1,300 EUR
View
A
Retailer 6
-
€1,360 EUR
View
A
Retailer 7
-
€1,385 EUR
View
B+
Retailer 8
-
€1,500 EUR
View
B+
Retailer 9
-
€1,586 EUR
View
B+
Retailer 10
-
€1,794 EUR
View
Most Expensive
B
NZ Jewellers
ae8f5be1-e745-4e7b-8d9d-eb4b15a6ff4c · Nov 5
€3,171 EUR
$3,559 USD
View
10 more retailers have this diamond
Prices start from €1,205 EURSave up to €1,966 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
€1,205 EUR