CaratHunter
Plans
Round|Lab Grown|IGI

1.09ct G SI1 Round Lab Grown Diamond

EX • G/SI1 • IGI LG770639336

Shape and cutting style on the report: Round brilliant

Certificate IGI LG770639336

Diamond specifications and retailer prices

From $204 AUD
As of November 5, 2026
Save $979 AUD (83%) vs most expensive(unlock to see where)
18 retailers carry this diamond
Most expensive: $1,183 AUD at MOH London · As of November 4, 2026
View at MOH London

About this 1.09ct lab-grown round diamond

This 1.09ct lab-grown round sits in the classic one-carat band, graded G colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG770639336 or 770639336. Listed at 18 retailers as of November 4, 2026, with prices from $204 to $1,183, a $979 spread on the same certified stone. MOH London lists it at $1,183. 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
G
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33.6°
Pavilion angle41.4°
OriginLab Grown
Grading LabIGI
CertificateIGI LG770639336
Dimensions6.62 × 6.65 × 4.04 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
6.62 mm6.65 mm1.09 ctG / SI1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG770639336
Side View
Table 61.0%Crown 33.6°Girdle: MED-STKPavilion 41.4°Culet: NoneDepth 60.8%

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: Nov 5
Current: $1,183 AUD|Low: $197 AUD|High: $1,201 AUD|Avg: $555 AUD|-1.5%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
November 6, 2026
Retailer 8$204 AUD
Retailer 9$254 AUD
Retailer 4$430 AUD
Retailer 2$447 AUD
Retailer 10$473 AUD
Retailer 6$486 AUD
Retailer 3$561 AUD
Retailer 5$714 AUD
Retailer 7$861 AUD
MOH London$1,183 AUD

40 data points across 10 retailers

18 retailers$204 AUD to $1,183 AUD

A
Cheapest Retailer
-
$204 AUD
A
Retailer 2
-
$237 AUD
View
A
Retailer 3
-
$254 AUD
View
Retailer 4
-
$254 AUD
View
Price last confirmed 12 days ago
A
Retailer 5
-
$430 AUD
View
A
Retailer 6
-
$447 AUD
View
B+
Retailer 7
-
$473 AUD
View
A
Retailer 8
-
$486 AUD
View
B+
Retailer 9
-
$486 AUD
View
B+
Retailer 10
-
$561 AUD
View
B+
Retailer 11
-
$609 AUD
View
B+
Retailer 12
-
$649 AUD
View
B
Retailer 13
-
$714 AUD
View
B
Retailer 14
-
$714 AUD
View
B
Retailer 15
-
$816 AUD
View
B
Retailer 16
-
$861 AUD
View
B
Retailer 17
-
$894 AUD
View
Most Expensive
B
MOH London
LG770639336 · Nov 4
$1,183 AUD
£652 GBP
View
17 more retailers have this diamond
Prices start from $204 AUDSave up to $979 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
$204 AUD