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Round|Lab Grown|IGI

1.21ct E SI2 Round Lab Grown Diamond

ID • E/SI2 • IGI LG766645929

Shape and cutting style on the report: Round brilliant

Certificate IGI LG766645929

Diamond specifications and retailer prices

From $231 AUD
$162 USD
As of October 29, 2026
Save $1,116 AUD (83%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: $1,347 AUD at MOH London · As of October 29, 2026
View at MOH London

About this 1.21ct lab-grown round diamond

This 1.21ct lab-grown round sits in the classic one-carat band, graded E colour (colourless) and SI2 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG766645929 or 766645929. Listed at 15 retailers as of October 29, 2026, with prices from $231 to $1,347, a $1,116 spread on the same certified stone. MOH London lists it at $1,347. 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

1.21
Carat
E
Colour
SI2
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishVery Good
SymmetryExcellent
FluorescenceNone
Crown angle34.6°
Pavilion angle40.1°
OriginLab Grown
Grading LabIGI
CertificateIGI LG766645929
Dimensions6.89 × 6.85 × 4.14 mm
L/W Ratio1.01
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
6.89 mm6.85 mm1.21 ctE / SI2
OriginLab Grown
CutIdeal
PolishVery Good
SymmetryExcellent
FluorescenceNone
CertificateIGI LG766645929
Side View
Table 57.0%Crown 34.6°Girdle: MediumPavilion 40.1°Culet: NoneDepth 60.3%

Caratlytics Score

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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: $1,347 AUD|Low: $222 AUD|High: $1,378 AUD|Avg: $600 AUD|-2.2%
MOH London
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
October 31, 2026
Retailer 12$231 AUD
Retailer 13$259 AUD
Retailer 6$282 AUD
Retailer 5$286 AUD
Retailer 9$495 AUD
Retailer 2$505 AUD
Retailer 3$518 AUD
Retailer 10$641 AUD
Retailer 14$642 AUD
Retailer 4$649 AUD
Retailer 8$664 AUD
Retailer 11$774 AUD
Retailer 7$797 AUD
MOH London$1,347 AUD

33 data points across 14 retailers

15 retailers$231 AUD to $1,347 AUD

A
Cheapest Retailer
-
$231 AUD
$162 USD
A
Retailer 2
-
$259 AUD
$182 USD
View
Final sale: no returns
Retailer 3
-
$282 AUD
$198 USD
View
Price last confirmed 47 days ago
A
Retailer 4
-
$286 AUD
$201 USD
View
A
Retailer 5
-
$495 AUD
€331 EUR
View
A
Retailer 6
-
$505 AUD
£279 GBP
View
B+
Retailer 7
-
$518 AUD
$364 USD
View
Retailer 8
-
$641 AUD
$450 USD
View
Price last confirmed 10 days ago
B+
Retailer 9
-
$642 AUD
$451 USD
View
B+
Retailer 10
-
$649 AUD
$456 USD
View
B+
Retailer 11
-
$664 AUD
£367 GBP
View
Retailer 12
-
$687 AUD
$483 USD
View
Price last confirmed 83 days ago
B
Retailer 13
-
$774 AUD
$544 USD
View
B+
Retailer 14
-
$797 AUD
$560 USD
View
Most Expensive
B
MOH London
LG766645929 · Oct 29
$1,347 AUD
£745 GBP
View
14 more retailers have this diamond
Prices start from $231 AUDSave up to $1,116 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
1.21ct Round
$231 AUD