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Round|Natural|GIA

1.23ct E SI1 Round Natural Diamond

EX • E/SI1 • GIA 5506549779

Certificate GIA 5506549779

Diamond specifications and retailer prices

From €4,153 EUR
As of November 4, 2026
Save €3,812 EUR (48%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: €7,965 EUR at NZ Jewellers · As of November 5, 2026
View at NZ Jewellers

About this 1.23ct natural round diamond

This 1.23ct natural round sits in the classic one-carat band, graded E colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by GIA 5506549779. Listed at 16 retailers as of November 4, 2026, with prices from €4,153 to €7,965, a €3,812 spread on the same certified stone. NZ Jewellers lists it at €7,965. 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

1.23
Carat
E
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
Crown angle35.5°
Pavilion angle41.2°
OriginNatural
Grading LabGIA
CertificateGIA 5506549779
Dimensions6.86 × 6.80 × 4.31 mm
L/W Ratio1.01
Top View
6.86 mm6.80 mm1.23 ctE / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 5506549779
Side View
Table 56.0%Crown 35.5°Girdle: MED-STKPavilion 41.2°Culet: NoneDepth 63.0%

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 4
Current: €5,062 EUR|Low: €4,153 EUR|High: €7,491 EUR|Avg: €5,098 EUR|+1.4%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
November 5, 2026
Retailer 6€4,153 EUR
Retailer 7€4,396 EUR
Retailer 3€4,444 EUR
Retailer 4€4,571 EUR
Retailer 9€4,762 EUR
Retailer 8€4,800 EUR
Retailer 1€5,062 EUR
Retailer 2€5,810 EUR
Retailer 5€7,382 EUR

38 data points across 9 retailers

16 retailers€4,153 EUR to €7,965 EUR

B+
Cheapest Retailer
-
€4,153 EUR
B+
Retailer 2
-
€4,396 EUR
View
Final sale: no returns
B+
Retailer 3
-
€4,444 EUR
View
B+
Retailer 4
-
€4,464 EUR
View
B+
Retailer 5
-
€4,571 EUR
View
B+
Retailer 6
-
€4,762 EUR
View
Retailer 7
-
€4,762 EUR
View
Price last confirmed 8 days ago
B+
Retailer 8
-
€4,762 EUR
View
Retailer 9
-
€4,800 EUR
View
Price last confirmed 28 days ago
B+
Retailer 10
-
€4,898 EUR
View
B+
Retailer 11
-
€5,062 EUR
View
B
Retailer 12
-
€5,495 EUR
View
B
Retailer 13
-
€5,810 EUR
View
B
Retailer 14
-
€7,382 EUR
View
B
Retailer 15
-
€7,872 EUR
View
Most Expensive
B
NZ Jewellers
1b6d518d-5cca-4551-b172-f30750849a94 · Nov 5
€7,965 EUR
$8,940 USD
View
15 more retailers have this diamond
Prices start from €4,153 EURSave up to €3,812 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+
1.23ct Round
€4,153 EUR