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1.29ct E SI1 Round Lab Grown Diamond

ID • E/SI1 • IGI LG773657850

Shape and cutting style on the report: Round brilliant

Certificate IGI LG773657850

Diamond specifications and retailer prices

From $247 AUD
As of November 1, 2026
Save $1,186 AUD (83%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: $1,433 AUD at MOH London · As of November 2, 2026
View at MOH London

About this 1.29ct lab-grown round diamond

This 1.29ct 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 LG773657850 or 773657850. Listed at 14 retailers as of November 1, 2026, with prices from $247 to $1,433, a $1,186 spread on the same certified stone. MOH London lists it at $1,433. 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

1.29
Carat
E
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34°
Pavilion angle40.7°
OriginLab Grown
Grading LabIGI
CertificateIGI LG773657850
Dimensions7.02 × 6.98 × 4.28 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
7.02 mm6.98 mm1.29 ctE / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG773657850
Side View
Table 57.0%Crown 34°Girdle: MED-STKPavilion 40.7°Culet: NoneDepth 61.1%

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: $1,433 AUD|Low: $237 AUD|High: $1,475 AUD|Avg: $590 AUD|-2.8%
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
November 4, 2026
Retailer 11$247 AUD
Retailer 12$277 AUD
Retailer 6$304 AUD
Retailer 4$307 AUD
Retailer 7$523 AUD
Retailer 10$546 AUD
Retailer 14$546 AUD
Retailer 3$593 AUD
Retailer 9$597 AUD
Retailer 13$666 AUD
Retailer 2$671 AUD
Retailer 8$806 AUD
Retailer 5$857 AUD
MOH London$1,433 AUD

35 data points across 14 retailers

14 retailers$247 AUD to $1,433 AUD

A
Cheapest Retailer
-
$247 AUD
A
Retailer 2
-
$277 AUD
View
Final sale: no returns
Retailer 3
-
$304 AUD
View
Price last confirmed 52 days ago
Retailer 4
-
$307 AUD
View
Price last confirmed 12 days ago
A
Retailer 5
-
$523 AUD
View
B+
Retailer 6
-
$546 AUD
View
A
Retailer 7
-
$546 AUD
View
A
Retailer 8
-
$593 AUD
View
A
Retailer 9
-
$597 AUD
View
B+
Retailer 10
-
$666 AUD
View
B+
Retailer 11
-
$671 AUD
View
B+
Retailer 12
-
$806 AUD
View
B+
Retailer 13
-
$857 AUD
View
Most Expensive
B
MOH London
LG773657850 · Nov 2
$1,433 AUD
£790 GBP
View
13 more retailers have this diamond
Prices start from $247 AUDSave up to $1,186 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
1.29ct Round
$247 AUD