Round|Natural|GIA

1.09ct E SI1 Round Natural Diamond

EX • E/SI1 • GIA 6522850805

Certificate GIA 6522850805

Diamond specifications and retailer prices

From $5,546 AUD
$3,896 USD
As of October 30, 2026
Save $5,437 AUD (50%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: $11,037 AUD 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
Colour
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: $10,983 AUD|Low: $5,360 AUD|High: $11,037 AUD|Avg: $6,872 AUD|-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 30, 2026
Retailer 13$5,546 AUD
Retailer 6$5,666 AUD
Retailer 8$5,709 AUD
Retailer 5$5,818 AUD
Retailer 15$5,972 AUD
Retailer 4$6,304 AUD
Retailer 12$6,304 AUD
Retailer 16$6,304 AUD
Retailer 2$6,409 AUD
Retailer 14$6,517 AUD
Retailer 3$6,537 AUD
Retailer 7$6,758 AUD
Retailer 11$7,105 AUD
Retailer 10$7,677 AUD
Retailer 9$10,096 AUD
NZ Jewellers$10,983 AUD

43 data points across 16 retailers

19 retailers$5,546 AUD to $10,983 AUD

B+
Cheapest Retailer
-
$5,546 AUD
$3,896 USD
B+
Retailer 2
-
$5,666 AUD
SGD 5,378 SGD
View
Retailer 3
-
$5,709 AUD
$4,010 USD
View
Price last confirmed 24 days ago
B+
Retailer 4
-
$5,818 AUD
$4,087 USD
View
Final sale: no returns
B+
Retailer 5
-
$5,972 AUD
$4,195 USD
View
B+
Retailer 6
-
$6,304 AUD
$4,428 USD
View
B+
Retailer 7
-
$6,304 AUD
$4,428 USD
View
B+
Retailer 8
-
$6,304 AUD
$4,428 USD
View
Retailer 9
-
$6,335 AUD
$4,450 USD
View
Price last confirmed 32 days ago
B+
Retailer 10
-
$6,409 AUD
£3,545 GBP
View
B+
Retailer 11
-
$6,517 AUD
$4,578 USD
View
B+
Retailer 12
-
$6,537 AUD
$4,592 USD
View
Retailer 13
-
$6,758 AUD
View
Price last confirmed 21 days ago
B+
Retailer 14
-
$7,105 AUD
£3,930 GBP
View
Retailer 15
-
$7,310 AUD
$5,135 USD
View
Price last confirmed 31 days ago
B
Retailer 16
-
$7,677 AUD
ZAR 87,118 ZAR
View
B
Retailer 17
-
$10,096 AUD
£5,584 GBP
View
B
Retailer 18
-
$10,983 AUD
$7,715 USD
View
Most Expensive
NZ Jewellers
6b55c98d-cb82-4104-94c6-1c51bc4e06db · Sep 28
$11,037 AUD
$7,753 USD
View
Price last confirmed 33 days ago
18 more retailers have this diamond
Prices start from $5,546 AUDSave up to $5,437 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.

B+
1.09ct Round
$5,546 AUD