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Round|Lab Grown|IGI

1.26ct E SI1 Round Lab Grown Diamond

EX • E/SI1 • IGI LG758581221

Shape and cutting style on the report: Round brilliant

Certificate IGI LG758581221

Diamond specifications and retailer prices

From $234 AUD
As of November 1, 2026
Save $1,125 AUD (83%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: $1,359 AUD at MOH London · As of November 2, 2026
View at MOH London

About this 1.26ct lab-grown round diamond

This 1.26ct lab-grown round sits in the one-and-a-quarter to one-and-a-half carat band, graded E colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG758581221 or 758581221. Listed at 11 retailers as of November 1, 2026, with prices from $234 to $1,359, a $1,125 spread on the same certified stone. MOH London lists it at $1,359. 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

1.26
Carat
E
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.5°
Pavilion angle41°
OriginLab Grown
Grading LabIGI
CertificateIGI LG758581221
Dimensions6.87 × 6.84 × 4.30 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
6.87 mm6.84 mm1.26 ctE / SI1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG758581221
Side View
Table 57.0%Crown 35.5°Girdle: MED-STKPavilion 41°Culet: NoneDepth 62.8%

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 1
Current: $1,359 AUD|Low: $233 AUD|High: $1,422 AUD|Avg: $592 AUD|-4.2%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
November 2, 2026
Retailer 7$234 AUD
Retailer 8$263 AUD
Retailer 12$300 AUD
Retailer 2$500 AUD
Retailer 5$509 AUD
Retailer 11$523 AUD
Retailer 10$567 AUD
Retailer 9$650 AUD
Retailer 4$679 AUD
Retailer 6$749 AUD
Retailer 3$843 AUD
MOH London$1,359 AUD

34 data points across 12 retailers

11 retailers$234 AUD to $1,359 AUD

A
Cheapest Retailer
-
$234 AUD
Retailer 2
-
$300 AUD
View
Price last confirmed 12 days ago
A
Retailer 3
-
$500 AUD
View
A
Retailer 4
-
$509 AUD
View
B+
Retailer 5
-
$523 AUD
View
A
Retailer 6
-
$567 AUD
View
B+
Retailer 7
-
$650 AUD
View
Retailer 8
-
$679 AUD
View
Price last confirmed 40 days ago
B+
Retailer 9
-
$749 AUD
View
B
Retailer 10
-
$843 AUD
View
Most Expensive
B
MOH London
LG758581221 · Nov 2
$1,359 AUD
£749 GBP
View
10 more retailers have this diamond
Prices start from $234 AUDSave up to $1,125 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
1.26ct Round
$234 AUD