Round|Natural|GIA

1.09ct E SI1 Round Natural Diamond

EX • E/SI1 • GIA 6227528327

Certificate GIA 6227528327

Diamond specifications and retailer prices

From €4,804 EUR
£4,226 GBP
As of October 31, 2026
Save €5,489 EUR (53%) vs most expensive(unlock to see where)
7 retailers carry this diamond
Most expensive: €10,293 EUR at Diamond Quarter · As of October 31, 2026
View at Diamond Quarter

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 6227528327. Listed at 7 retailers as of October 31, 2026, with prices from €4,804 to €10,293, a €5,489 spread on the same certified stone. Diamond Quarter lists it at €10,293. 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
Color
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33.5°
Pavilion angle41.6°
OriginNatural
Grading LabGIA
CertificateGIA 6227528327
Dimensions6.63 × 6.60 × 4.05 mm
L/W Ratio1.00
Star length50%
Lower girdle80%
Top View
6.63 mm6.60 mm1.09 ctE / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 6227528327
Side View
Table 61.0%Crown 33.5°Girdle: MED-STKPavilion 41.6°Culet: NoneDepth 61.3%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 31
Current: €4,804 EUR|Low: €4,006 EUR|High: €7,989 EUR|Avg: €5,558 EUR|+1.8%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
October 31, 2026
Retailer 4€4,006 EUR
Retailer 1€4,804 EUR
Retailer 5€4,964 EUR
Retailer 6€5,468 EUR
Retailer 2€5,623 EUR
Retailer 3€7,937 EUR

40 data points across 6 retailers

7 retailers€4,804 EUR to €10,293 EUR

Retailer 1
-
€4,006 EUR
$4,475 USD
Price last confirmed 13 days ago
B+
Retailer 2
-
€4,804 EUR
£4,226 GBP
View
Retailer 3
-
€4,964 EUR
A$8,533 AUD
View
Price last confirmed 21 days ago
Retailer 4
-
€5,468 EUR
$6,109 USD
View
Price last confirmed 8 days ago
B
Retailer 5
-
€5,623 EUR
View
B
Retailer 6
-
€7,937 EUR
£6,982 GBP
View
Most Expensive
B
Diamond Quarter
1.09SI1E62272A43N · Oct 31
€10,293 EUR
£9,055 GBP
View
6 more retailers have this diamond
Prices start from €4,804 EURSave up to €5,489 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+
1.09ct Round
€4,804 EUR