CaratHunter
Plans
Round|Lab Grown|IGI

1.09ct E SI1 Round Lab Grown Diamond

ID • E/SI1 • IGI LG675550843

Shape and cutting style on the report: Round brilliant

Certificate IGI LG675550843

Diamond specifications and retailer prices

From $215 AUD
$151 USD
As of October 29, 2026
Save $1,262 AUD (85%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: $1,477 AUD at Reve Diamonds · As of October 30, 2026
View at Reve Diamonds

About this 1.09ct lab-grown round diamond

This 1.09ct lab-grown 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 IGI LG675550843 or 675550843. Listed at 15 retailers as of October 29, 2026, with prices from $215 to $1,477, a $1,262 spread on the same certified stone. Reve Diamonds lists it at $1,477. 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
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33.4°
Pavilion angle41.2°
OriginLab Grown
Grading LabIGI
CertificateIGI LG675550843
Dimensions6.65 × 6.63 × 4.05 mm
L/W Ratio1.00
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
6.65 mm6.63 mm1.09 ctE / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG675550843
Side View
Table 59.0%Crown 33.4°Girdle: MED-STKPavilion 41.2°Culet: NoneDepth 61.0%

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 29
Current: $521 AUD|Low: $215 AUD|High: $1,477 AUD|Avg: $577 AUD|-9.9%
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
Reve Diamonds
October 30, 2026
Retailer 4$215 AUD
Retailer 2$239 AUD
Retailer 3$249 AUD
Retailer 14$266 AUD
Retailer 6$296 AUD
Retailer 12$441 AUD
Retailer 7$463 AUD
Retailer 10$490 AUD
Retailer 1$521 AUD
Retailer 9$725 AUD
Retailer 13$857 AUD
Retailer 11$905 AUD
Retailer 5$936 AUD
Retailer 8$1,255 AUD
Reve Diamonds$1,477 AUD

43 data points across 15 retailers

15 retailers$215 AUD to $1,477 AUD

A
Cheapest Retailer
-
$215 AUD
$151 USD
A
Retailer 2
-
$239 AUD
$168 USD
View
Final sale: no returns
A
Retailer 3
-
$249 AUD
$175 USD
View
A
Retailer 4
-
$266 AUD
$187 USD
View
A
Retailer 5
-
$296 AUD
$208 USD
View
A
Retailer 6
-
$441 AUD
$310 USD
View
A
Retailer 7
-
$463 AUD
£256 GBP
View
A
Retailer 8
-
$490 AUD
$344 USD
View
A
Retailer 9
-
$521 AUD
£288 GBP
View
B+
Retailer 10
-
$725 AUD
$509 USD
View
B
Retailer 11
-
$857 AUD
$602 USD
View
B
Retailer 12
-
$905 AUD
$636 USD
View
B
Retailer 13
-
$936 AUD
$658 USD
View
B
Retailer 14
-
$1,255 AUD
£694 GBP
View
Most Expensive
B
Reve Diamonds
5A1831A79 · Oct 30
$1,477 AUD
$1,038 USD
View
14 more retailers have this diamond
Prices start from $215 AUDSave up to $1,262 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
$215 AUD