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Round|Natural|GIA

1.09ct E SI1 Round Natural Diamond

EX • E/SI1 • GIA 1553602254

Certificate GIA 1553602254

Diamond specifications and retailer prices

From $3,920 AUD
As of October 30, 2026
Save $4,163 AUD (52%) vs most expensive(unlock to see where)
8 retailers carry this diamond
Most expensive: $8,083 AUD at NZ Jewellers · As of October 30, 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 1553602254. Listed at 8 retailers as of October 30, 2026, with prices from $3,920 to $8,083, a $4,163 spread on the same certified stone. NZ Jewellers lists it at $8,083. 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
FluorescenceMedium
Crown angle35°
Pavilion angle41.2°
OriginNatural
Grading LabGIA
CertificateGIA 1553602254
Dimensions6.60 × 6.57 × 4.05 mm
L/W Ratio1.00
Star length50%
Culet sizeNone
Key to symbols
Crystal, Twinning Wisp, Feather
Top View
6.60 mm6.57 mm1.09 ctE / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceMedium
CertificateGIA 1553602254
Side View
Table 60.0%Crown 35°Girdle: MED-STKPavilion 41.2°Culet: NoneDepth 61.5%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 30
Current: $8,083 AUD|Low: $3,381 AUD|High: $8,083 AUD|Avg: $5,697 AUD
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
October 31, 2026
Retailer 5$4,282 AUD
Retailer 6$4,427 AUD
Retailer 2$5,161 AUD
Retailer 7$5,195 AUD
Retailer 4$5,379 AUD
Retailer 3$7,801 AUD
NZ Jewellers$8,083 AUD

21 data points across 7 retailers

8 retailers$3,920 AUD to $8,083 AUD

A
Cheapest Retailer
-
$3,920 AUD
A
Retailer 2
-
$4,282 AUD
$3,008 USD
View
Final sale: no returns
A
Retailer 3
-
$4,427 AUD
$3,110 USD
View
B+
Retailer 4
-
$5,161 AUD
€3,453 EUR
View
B+
Retailer 5
-
$5,195 AUD
$3,649 USD
View
B+
Retailer 6
-
$5,379 AUD
£2,975 GBP
View
B
Retailer 7
-
$7,801 AUD
£4,315 GBP
View
Most Expensive
B
NZ Jewellers
5cd2d617-eb4b-4060-a75c-fd6f281c4b34 · Oct 30
$8,083 AUD
$5,678 USD
View
7 more retailers have this diamond
Prices start from $3,920 AUDSave up to $4,163 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
$3,920 AUD