Round|Natural|GIA

1.09ct E SI1 Round Natural Diamond

EX • E/SI1 • GIA 6502436101

Certificate GIA 6502436101

Diamond specifications and retailer prices

From €2,849 EUR
$3,171 USD
As of October 29, 2026
Save €4,734 EUR (62%) vs most expensive(unlock to see where)
27 retailers carry this diamond
Most expensive: €7,583 EUR at Diamond Quarter · As of October 28, 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 6502436101. Listed at 27 retailers as of October 28, 2026, with prices from €2,849 to €7,583, a €4,734 spread on the same certified stone. Diamond Quarter lists it at €7,583. 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 angle33°
Pavilion angle41.8°
OriginNatural
Grading LabGIA
CertificateGIA 6502436101
Dimensions6.67 × 6.65 × 4.06 mm
L/W Ratio1.00
Star length45%
Lower girdle75%
Top View
6.67 mm6.65 mm1.09 ctE / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 6502436101
Side View
Table 59.0%Crown 33°Girdle: MED-STKPavilion 41.8°Culet: NoneDepth 61.0%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 29
Current: €3,853 EUR|Low: €2,849 EUR|High: €6,481 EUR|Avg: €3,870 EUR|+1.4%
Retailer 1
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
October 30, 2026
Retailer 7€2,849 EUR
Retailer 16€3,049 EUR
Retailer 3€3,169 EUR
Retailer 15€3,284 EUR
Retailer 13€3,430 EUR
Retailer 8€3,469 EUR
Retailer 1€3,853 EUR
Retailer 4€3,854 EUR
Retailer 14€3,854 EUR
Retailer 2€3,935 EUR
Retailer 11€3,989 EUR
Retailer 6€4,084 EUR
Retailer 5€4,288 EUR
Retailer 12€4,296 EUR
Retailer 9€4,615 EUR
Retailer 10€6,347 EUR

44 data points across 16 retailers

27 retailers€2,849 EUR to €7,583 EUR

A
Cheapest Retailer
-
€2,849 EUR
$3,171 USD
A
Retailer 2
-
€3,049 EUR
$3,393 USD
View
Retailer 3
-
€3,149 EUR
$3,505 USD
View
Price last confirmed 24 days ago
B+
Retailer 4
-
€3,169 EUR
$3,527 USD
View
Final sale: no returns
B+
Retailer 5
-
€3,284 EUR
$3,655 USD
View
B+
Retailer 6
-
€3,430 EUR
$3,818 USD
View
B+
Retailer 7
-
€3,434 EUR
$3,822 USD
View
B+
Retailer 8
-
€3,434 EUR
$3,822 USD
View
Retailer 9
-
€3,469 EUR
$3,861 USD
View
Price last confirmed 52 days ago
Retailer 10
-
€3,469 EUR
$3,861 USD
View
Price last confirmed 31 days ago
B+
Retailer 11
-
€3,566 EUR
$3,969 USD
View
B+
Retailer 12
-
€3,853 EUR
£3,377 GBP
View
B+
Retailer 13
-
€3,854 EUR
$4,290 USD
View
B+
Retailer 14
-
€3,854 EUR
$4,290 USD
View
B+
Retailer 15
-
€3,935 EUR
$4,380 USD
View
B+
Retailer 16
-
€3,989 EUR
$4,440 USD
View
Retailer 17
-
€4,003 EUR
$4,455 USD
View
Price last confirmed 53 days ago
Retailer 18
-
€4,003 EUR
$4,455 USD
View
Price last confirmed 30 days ago
Retailer 19
-
€4,084 EUR
A$6,994 AUD
View
Price last confirmed 20 days ago
Retailer 20
-
€4,288 EUR
$4,773 USD
View
Price last confirmed 7 days ago
B+
Retailer 21
-
€4,296 EUR
£3,765 GBP
View
B+
Retailer 22
-
€4,615 EUR
ZAR 82,983 ZAR
View
B
Retailer 23
-
€6,347 EUR
£5,562 GBP
View
B
Retailer 24
-
€6,603 EUR
$7,349 USD
View
Retailer 25
-
€6,671 EUR
$7,425 USD
View
Price last confirmed 58 days ago
Retailer 26
-
€6,671 EUR
$7,425 USD
View
Price last confirmed 32 days ago
Most Expensive
B
Diamond Quarter
1.09SI1E65017677N · Oct 28
€7,583 EUR
£6,646 GBP
View
26 more retailers have this diamond
Prices start from €2,849 EURSave up to €4,734 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
€2,849 EUR