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Round|Lab Grown|IGI

1.22ct E SI1 Round Lab Grown Diamond

ID • E/SI1 • IGI LG783639397

Shape and cutting style on the report: Round brilliant

Certificate IGI LG783639397

Diamond specifications and retailer prices

From $536 AUD
As of November 6, 2026
Save $1,005 AUD (65%) vs most expensive(unlock to see where)
3 retailers carry this diamond
Most expensive: $1,540 AUD at MOH London · As of November 5, 2026
View at MOH London

About this 1.22ct lab-grown round diamond

This 1.22ct 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 LG783639397 or 783639397. Listed at 3 retailers as of November 5, 2026, with prices from $536 to $1,540, a $1,005 spread on the same certified stone. MOH London lists it at $1,540. 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

1.22
Carat
E
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.5°
Pavilion angle41°
OriginLab Grown
Grading LabIGI
CertificateIGI LG783639397
Dimensions6.87 × 6.81 × 4.18 mm
L/W Ratio1.01
Girdle conditionFaceted
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
6.87 mm6.81 mm1.22 ctE / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG783639397
Side View
Table 60.0%Crown 34.5°Girdle: MED-STKPavilion 41°Culet: NoneDepth 61.1%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
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Price History

Last verified: Nov 6
Current: $1,540 AUD|Low: $500 AUD|High: $1,562 AUD|Avg: $938 AUD|-1.3%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
November 5, 2026
Retailer 2$536 AUD
Retailer 4$593 AUD
Retailer 3$763 AUD
Retailer 5$1,309 AUD
MOH London$1,540 AUD

11 data points across 5 retailers

3 retailers$536 AUD to $1,540 AUD

A
Cheapest Retailer
-
$536 AUD
B+
Retailer 2
-
$763 AUD
View
Most Expensive
B
MOH London
LG783639397 · Nov 5
$1,540 AUD
£849 GBP
View
2 more retailers have this diamond
Prices start from $536 AUDSave up to $1,005 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
1.22ct Round
$536 AUD