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Round|Natural|GIA

1.09ct E SI1 Round Natural Diamond

EX • E/SI1 • GIA 6502436101

Certificate GIA 6502436101

Diamond specifications and retailer prices

From $4,514 AUD
$3,171 USD
As of October 29, 2026
Save $7,501 AUD (62%) vs most expensive(unlock to see where)
27 retailers carry this diamond
Most expensive: $12,015 AUD 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 $4,514 to $12,015, a $7,501 spread on the same certified stone. Diamond Quarter lists it at $12,015. 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

How it works →
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: $6,105 AUD|Low: $4,514 AUD|High: $10,269 AUD|Avg: $6,140 AUD|+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 31, 2026
Retailer 7$4,514 AUD
Retailer 16$4,830 AUD
Retailer 3$5,021 AUD
Retailer 15$5,203 AUD
Retailer 13$5,435 AUD
Retailer 8$5,497 AUD
Retailer 1$6,105 AUD
Retailer 4$6,107 AUD
Retailer 14$6,107 AUD
Retailer 2$6,235 AUD
Retailer 11$6,321 AUD
Retailer 6$6,471 AUD
Retailer 5$6,795 AUD
Retailer 12$6,807 AUD
Retailer 9$7,313 AUD
Retailer 10$10,056 AUD

44 data points across 16 retailers

27 retailers$4,514 AUD to $12,015 AUD

A
Cheapest Retailer
-
$4,514 AUD
$3,171 USD
A
Retailer 2
-
$4,830 AUD
$3,393 USD
View
Retailer 3
-
$4,990 AUD
$3,505 USD
View
Price last confirmed 26 days ago
B+
Retailer 4
-
$5,021 AUD
$3,527 USD
View
Final sale: no returns
B+
Retailer 5
-
$5,203 AUD
$3,655 USD
View
B+
Retailer 6
-
$5,435 AUD
$3,818 USD
View
B+
Retailer 7
-
$5,441 AUD
$3,822 USD
View
B+
Retailer 8
-
$5,441 AUD
$3,822 USD
View
Retailer 9
-
$5,497 AUD
$3,861 USD
View
Price last confirmed 54 days ago
Retailer 10
-
$5,497 AUD
$3,861 USD
View
Price last confirmed 32 days ago
B+
Retailer 11
-
$5,650 AUD
$3,969 USD
View
B+
Retailer 12
-
$6,105 AUD
£3,377 GBP
View
B+
Retailer 13
-
$6,107 AUD
$4,290 USD
View
B+
Retailer 14
-
$6,107 AUD
$4,290 USD
View
B+
Retailer 15
-
$6,235 AUD
$4,380 USD
View
B+
Retailer 16
-
$6,321 AUD
$4,440 USD
View
Retailer 17
-
$6,342 AUD
$4,455 USD
View
Price last confirmed 54 days ago
Retailer 18
-
$6,342 AUD
$4,455 USD
View
Price last confirmed 31 days ago
Retailer 19
-
$6,471 AUD
View
Price last confirmed 21 days ago
Retailer 20
-
$6,795 AUD
$4,773 USD
View
Price last confirmed 8 days ago
B+
Retailer 21
-
$6,807 AUD
£3,765 GBP
View
B+
Retailer 22
-
$7,313 AUD
ZAR 82,983 ZAR
View
B
Retailer 23
-
$10,056 AUD
£5,562 GBP
View
B
Retailer 24
-
$10,462 AUD
$7,349 USD
View
Retailer 25
-
$10,570 AUD
$7,425 USD
View
Price last confirmed 60 days ago
Retailer 26
-
$10,570 AUD
$7,425 USD
View
Price last confirmed 33 days ago
Most Expensive
B
Diamond Quarter
1.09SI1E65017677N · Oct 28
$12,015 AUD
£6,646 GBP
View
26 more retailers have this diamond
Prices start from $4,514 AUDSave up to $7,501 AUD

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
$4,514 AUD