Round|Natural|GIA

1.09ct E SI1 Round Natural Diamond

EX • E/SI1 • GIA 6522850805

Certificate GIA 6522850805

Diamond specifications and retailer prices

From $3,896 USD
As of October 28, 2026
Save $3,819 USD (50%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: $7,753 USD 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 27, 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 28
Current: $4,488 USD|Low: $3,765 USD|High: $7,173 USD|Avg: $4,636 USD|+1.6%
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
October 29, 2026
Retailer 10$3,896 USD
Retailer 3$3,980 USD
Retailer 5$4,010 USD
Retailer 2$4,087 USD
Retailer 12$4,195 USD
Retailer 9$4,428 USD
Retailer 1$4,488 USD
Retailer 11$4,578 USD
Retailer 13$4,592 USD
Retailer 4$4,747 USD
Retailer 8$4,991 USD
Retailer 7$5,393 USD
Retailer 6$7,092 USD

43 data points across 13 retailers

19 retailers$3,896 USD to $7,715 USD

B+
Cheapest Retailer
-
$3,896 USD
B+
Retailer 2
-
$3,980 USD
SGD 5,378 SGD
View
B+
Retailer 3
-
$4,010 USD
View
Price last confirmed 22 days ago
B+
Retailer 4
-
$4,087 USD
View
Final sale: no returns
B+
Retailer 5
-
$4,195 USD
View
B+
Retailer 6
-
$4,428 USD
View
B+
Retailer 7
-
$4,428 USD
View
B+
Retailer 8
-
$4,428 USD
View
B+
Retailer 9
-
$4,450 USD
View
Price last confirmed 30 days ago
B+
Retailer 10
-
$4,488 USD
£3,534 GBP
View
B+
Retailer 11
-
$4,578 USD
View
B+
Retailer 12
-
$4,592 USD
View
B+
Retailer 13
-
$4,747 USD
A$7,303 AUD
View
Price last confirmed 19 days ago
B+
Retailer 14
-
$4,991 USD
£3,930 GBP
View
B
Retailer 15
-
$5,135 USD
View
Price last confirmed 29 days ago
B
Retailer 16
-
$5,393 USD
ZAR 87,118 ZAR
View
B
Retailer 17
-
$7,092 USD
£5,584 GBP
View
B
Retailer 18
-
$7,715 USD
View
Most Expensive
B
NZ Jewellers
6b55c98d-cb82-4104-94c6-1c51bc4e06db · Sep 28
$7,753 USD
View
Price last confirmed 31 days ago
18 more retailers have this diamond
Prices start from $3,896 USDSave up to $3,819 USD

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
$3,896 USD