Round|Natural|GIA

1.09ct E SI1 Round Natural Diamond

EX • E/SI1 • GIA 6502436101

Certificate GIA 6502436101

Diamond specifications and retailer prices

From €2,838 EUR
$3,171 USD
As of October 31, 2026
Save €4,716 EUR (62%) vs most expensive(unlock to see where)
27 retailers carry this diamond
Most expensive: €7,555 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 6502436101. Listed at 27 retailers as of October 31, 2026, with prices from €2,838 to €7,555, a €4,716 spread on the same certified stone. Diamond Quarter lists it at €7,555. 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°
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 31
Current: €4,641 EUR|Low: €2,838 EUR|High: €6,646 EUR|Avg: €3,957 EUR|+1.1%
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
Retailer 17
Retailer 18
Retailer 19
October 31, 2026
Retailer 11€2,838 EUR
Retailer 4€3,037 EUR
Retailer 7€3,157 EUR
Retailer 2€3,272 EUR
Retailer 18€3,417 EUR
Retailer 3€3,421 EUR
Retailer 16€3,421 EUR
Retailer 6€3,553 EUR
Retailer 12€3,839 EUR
Retailer 8€3,840 EUR
Retailer 19€3,840 EUR
Retailer 5€3,921 EUR
Retailer 14€3,974 EUR
Retailer 10€4,069 EUR
Retailer 9€4,272 EUR
Retailer 15€4,280 EUR
Retailer 1€4,641 EUR
Retailer 13€6,323 EUR
Retailer 17€6,578 EUR

43 data points across 19 retailers

27 retailers€2,838 EUR to €7,555 EUR

A
Cheapest Retailer
-
€2,838 EUR
$3,171 USD
A
Retailer 2
-
€3,037 EUR
$3,393 USD
View
Retailer 3
-
€3,137 EUR
$3,505 USD
View
Price last confirmed 26 days ago
B+
Retailer 4
-
€3,157 EUR
$3,527 USD
View
Final sale: no returns
B+
Retailer 5
-
€3,272 EUR
$3,655 USD
View
B+
Retailer 6
-
€3,417 EUR
$3,818 USD
View
B+
Retailer 7
-
€3,421 EUR
$3,822 USD
View
B+
Retailer 8
-
€3,421 EUR
$3,822 USD
View
Retailer 9
-
€3,456 EUR
$3,861 USD
View
Price last confirmed 54 days ago
Retailer 10
-
€3,456 EUR
$3,861 USD
View
Price last confirmed 33 days ago
B+
Retailer 11
-
€3,553 EUR
$3,969 USD
View
B+
Retailer 12
-
€3,839 EUR
£3,377 GBP
View
B+
Retailer 13
-
€3,840 EUR
$4,290 USD
View
B+
Retailer 14
-
€3,840 EUR
$4,290 USD
View
B+
Retailer 15
-
€3,921 EUR
$4,380 USD
View
B+
Retailer 16
-
€3,974 EUR
$4,440 USD
View
Retailer 17
-
€3,988 EUR
$4,455 USD
View
Price last confirmed 55 days ago
Retailer 18
-
€3,988 EUR
$4,455 USD
View
Price last confirmed 32 days ago
Retailer 19
-
€4,069 EUR
A$6,994 AUD
View
Price last confirmed 22 days ago
Retailer 20
-
€4,272 EUR
$4,773 USD
View
Price last confirmed 8 days ago
B+
Retailer 21
-
€4,280 EUR
£3,765 GBP
View
B+
Retailer 22
-
€4,641 EUR
ZAR 83,766 ZAR
View
B
Retailer 23
-
€6,323 EUR
£5,562 GBP
View
B
Retailer 24
-
€6,578 EUR
$7,349 USD
View
Retailer 25
-
€6,646 EUR
$7,425 USD
View
Price last confirmed 60 days ago
Retailer 26
-
€6,646 EUR
$7,425 USD
View
Price last confirmed 34 days ago
Most Expensive
B
Diamond Quarter
1.09SI1E65017677N · Oct 31
€7,555 EUR
£6,646 GBP
View
26 more retailers have this diamond
Prices start from €2,838 EURSave up to €4,716 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
€2,838 EUR