Round|Natural|GIA

1.09ct E SI1 Round Natural Diamond

EX • E/SI1 • GIA 1553302112

Certificate GIA 1553302112

Diamond specifications and retailer prices

From €2,622 EUR
A$4,506 AUD
As of October 30, 2026
Save €2,796 EUR (52%) vs most expensive(unlock to see where)
6 retailers carry this diamond
Most expensive: €5,418 EUR at NZ Jewellers · As of October 30, 2026
View at NZ Jewellers

About this 1.09ct natural round diamond

This 1.09ct 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 1553302112. Listed at 6 retailers as of October 30, 2026, with prices from €2,622 to €5,418, a €2,796 spread on the same certified stone. NZ Jewellers lists it at €5,418. 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

1.09
Carat
E
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.5°
Pavilion angle41.2°
OriginNatural
Grading LabGIA
CertificateGIA 1553302112
Dimensions6.51 × 6.55 × 4.11 mm
L/W Ratio1.01
Star length50%
Key to symbols
Feather, Crystal, Needle, Indented Natural
Top View
6.51 mm6.55 mm1.09 ctE / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 1553302112
Side View
Table 58.0%Crown 35.5°Girdle: MED-STKPavilion 41.2°Culet: NoneDepth 62.9%

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: Oct 30
Current: €5,229 EUR|Low: €2,392 EUR|High: €5,263 EUR|Avg: €3,557 EUR|+0.4%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
October 29, 2026
Retailer 3€2,871 EUR
Retailer 4€3,029 EUR
Retailer 2€3,456 EUR
Retailer 1€5,229 EUR

23 data points across 4 retailers

6 retailers€2,622 EUR to €5,418 EUR

A
Cheapest Retailer
-
€2,622 EUR
A$4,506 AUD
A
Retailer 2
-
€2,871 EUR
$3,207 USD
View
Final sale: no returns
Retailer 3
-
€3,029 EUR
£2,664 GBP
View
Price last confirmed 30 days ago
B+
Retailer 4
-
€3,456 EUR
View
B
Retailer 5
-
€5,229 EUR
£4,600 GBP
View
Most Expensive
B
NZ Jewellers
bf3de57b-d7c5-42ed-b71a-9e4580671573 · Oct 30
€5,418 EUR
$6,053 USD
View
5 more retailers have this diamond
Prices start from €2,622 EURSave up to €2,796 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
1.09ct Round
€2,622 EUR