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Round|Lab Grown|IGI

1.09ct E SI1 Round Lab Grown Diamond

ID • E/SI1 • IGI LG803603992

Shape and cutting style on the report: Round brilliant

Certificate IGI LG803603992

Diamond specifications and retailer prices

From $212 AUD
$149 USD
As of October 29, 2026
Save $1,270 AUD (86%) vs most expensive(unlock to see where)
17 retailers carry this diamond
Most expensive: $1,482 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 LG803603992 or 803603992. Listed at 17 retailers as of October 29, 2026, with prices from $212 to $1,482, a $1,270 spread on the same certified stone. Reve Diamonds lists it at $1,482. 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 angle34.3°
Pavilion angle40.6°
OriginLab Grown
Grading LabIGI
CertificateIGI LG803603992
Dimensions6.65 × 6.62 × 4.05 mm
L/W Ratio1.00
Girdle conditionFaceted
Culet sizePointed
Cert comments
As Grown - No indication of post-growth treatment This Laboratory Grown Diamond was created by High Pressure High Temperature (HPHT) growth process Type II
Top View
6.65 mm6.62 mm1.09 ctE / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG803603992
Side View
Table 57.0%Crown 34.3°Girdle: MED-STKPavilion 40.6°Culet: NoneDepth 61.1%

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: $251 AUD|Low: $238 AUD|High: $1,482 AUD|Avg: $596 AUD
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Reve Diamonds
October 30, 2026
Retailer 1$251 AUD
Retailer 4$266 AUD
Retailer 10$456 AUD
Retailer 7$467 AUD
Retailer 5$493 AUD
Retailer 6$525 AUD
Retailer 11$655 AUD
Retailer 3$689 AUD
Retailer 2$726 AUD
Retailer 8$942 AUD
Retailer 9$1,237 AUD
Reve Diamonds$1,482 AUD

36 data points across 12 retailers

17 retailers$212 AUD to $1,482 AUD

A
Cheapest Retailer
-
$212 AUD
$149 USD
A
Retailer 2
-
$251 AUD
$176 USD
View
A
Retailer 3
-
$263 AUD
$185 USD
View
A
Retailer 4
-
$263 AUD
$185 USD
View
A
Retailer 5
-
$266 AUD
$187 USD
View
Final sale: no returns
A
Retailer 6
-
$440 AUD
$309 USD
View
A
Retailer 7
-
$456 AUD
€305 EUR
View
A
Retailer 8
-
$467 AUD
£258 GBP
View
B+
Retailer 9
-
$493 AUD
$346 USD
View
B+
Retailer 10
-
$525 AUD
£290 GBP
View
B+
Retailer 11
-
$655 AUD
View
B+
Retailer 12
-
$689 AUD
$484 USD
View
Retailer 13
-
$726 AUD
$510 USD
View
Price last confirmed 14 days ago
B
Retailer 14
-
$846 AUD
$594 USD
View
B
Retailer 15
-
$942 AUD
$662 USD
View
B
Retailer 16
-
$1,237 AUD
£684 GBP
View
Most Expensive
B
Reve Diamonds
FDA9E6D5D · Oct 30
$1,482 AUD
$1,041 USD
View
16 more retailers have this diamond
Prices start from $212 AUDSave up to $1,270 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
$212 AUD