Round|Natural|GIA

1.09ct E SI1 Round Natural Diamond

EX • E/SI1 • GIA 6522850805

Certificate GIA 6522850805

Diamond specifications and retailer prices

From €3,487 EUR
$3,896 USD
As of October 30, 2026
Save €3,418 EUR (50%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: €6,940 EUR at NZ Jewellers · As of September 28, 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 6522850805. Listed at 19 retailers as of October 30, 2026, with a 98% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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 angle36°
Pavilion angle40.6°
OriginNatural
Grading LabGIA
CertificateGIA 6522850805
Dimensions6.60 × 6.56 × 4.05 mm
L/W Ratio1.01
Star length50%
Lower girdle80%
Top View
6.60 mm6.56 mm1.09 ctE / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 6522850805
Side View
Table 57.0%Crown 36°Girdle: MED-STKPavilion 40.6°Culet: NoneDepth 61.8%

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: Oct 30
Current: €6,906 EUR|Low: €3,370 EUR|High: €6,940 EUR|Avg: €4,325 EUR|-0.5%
NZ Jewellers
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 31, 2026
Retailer 13€3,487 EUR
Retailer 6€3,562 EUR
Retailer 8€3,589 EUR
Retailer 5€3,658 EUR
Retailer 15€3,755 EUR
Retailer 4€3,963 EUR
Retailer 12€3,963 EUR
Retailer 16€3,963 EUR
Retailer 9€4,030 EUR
Retailer 14€4,097 EUR
Retailer 3€4,110 EUR
Retailer 7€4,249 EUR
Retailer 11€4,467 EUR
Retailer 2€4,872 EUR
Retailer 10€6,348 EUR
NZ Jewellers€6,906 EUR

43 data points across 16 retailers

19 retailers€3,487 EUR to €6,906 EUR

B+
Cheapest Retailer
-
€3,487 EUR
$3,896 USD
B+
Retailer 2
-
€3,562 EUR
SGD 5,378 SGD
View
Retailer 3
-
€3,589 EUR
$4,010 USD
View
Price last confirmed 24 days ago
B+
Retailer 4
-
€3,658 EUR
$4,087 USD
View
Final sale: no returns
B+
Retailer 5
-
€3,755 EUR
$4,195 USD
View
B+
Retailer 6
-
€3,963 EUR
$4,428 USD
View
B+
Retailer 7
-
€3,963 EUR
$4,428 USD
View
B+
Retailer 8
-
€3,963 EUR
$4,428 USD
View
Retailer 9
-
€3,983 EUR
$4,450 USD
View
Price last confirmed 33 days ago
B+
Retailer 10
-
€4,030 EUR
£3,545 GBP
View
B+
Retailer 11
-
€4,097 EUR
$4,578 USD
View
B+
Retailer 12
-
€4,110 EUR
$4,592 USD
View
Retailer 13
-
€4,249 EUR
A$7,303 AUD
View
Price last confirmed 22 days ago
B+
Retailer 14
-
€4,467 EUR
£3,930 GBP
View
Retailer 15
-
€4,596 EUR
$5,135 USD
View
Price last confirmed 32 days ago
B
Retailer 16
-
€4,872 EUR
ZAR 87,940 ZAR
View
B
Retailer 17
-
€6,348 EUR
£5,584 GBP
View
B
Retailer 18
-
€6,906 EUR
$7,715 USD
View
Most Expensive
NZ Jewellers
6b55c98d-cb82-4104-94c6-1c51bc4e06db · Sep 28
€6,940 EUR
$7,753 USD
View
Price last confirmed 33 days ago
18 more retailers have this diamond
Prices start from €3,487 EURSave up to €3,418 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
€3,487 EUR