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Round|Lab Grown|IGI

1.50ct E SI1 Round Lab Grown Diamond

EX • E/SI1 • IGI LG776623440

Shape and cutting style on the report: Round brilliant

Certificate IGI LG776623440

Diamond specifications and retailer prices

From $293 AUD
As of November 1, 2026
Save $1,736 AUD (86%) vs most expensive(unlock to see where)
17 retailers carry this diamond
Most expensive: $2,028 AUD at Brilliant Earth · As of November 5, 2026
View at Brilliant Earth

About this 1.5ct lab-grown round diamond

This 1.5ct lab-grown round sits in the one-and-a-half to two carat band, graded E colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG776623440 or 776623440. Listed at 17 retailers as of November 1, 2026, with prices from $293 to $2,028, a $1,736 spread on the same certified stone. Brilliant Earth lists it at $2,028. 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

1.50
Carat
E
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36°
Pavilion angle40.2°
OriginLab Grown
Grading LabIGI
CertificateIGI LG776623440
Dimensions7.28 × 7.24 × 4.53 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
7.28 mm7.24 mm1.50 ctE / SI1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG776623440
Side View
Table 56.0%Crown 36°Girdle: MED-STKPavilion 40.2°Culet: NoneDepth 62.4%

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: Nov 1
Current: $2,028 AUD|Low: $280 AUD|High: $2,028 AUD|Avg: $834 AUD
Brilliant Earth
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 6, 2026
Retailer 13$293 AUD
Retailer 3$363 AUD
Retailer 14$363 AUD
Retailer 2$443 AUD
Retailer 8$586 AUD
Retailer 6$600 AUD
Retailer 11$666 AUD
Retailer 5$727 AUD
Retailer 12$740 AUD
Retailer 10$1,050 AUD
Retailer 7$1,113 AUD
Retailer 4$1,166 AUD
Retailer 9$1,528 AUD
Brilliant Earth$2,028 AUD

45 data points across 14 retailers

17 retailers$293 AUD to $2,028 AUD

Retailer 1
-
$293 AUD
Price last confirmed 44 days ago
A
Retailer 2
-
$293 AUD
View
Retailer 3
-
$339 AUD
View
Price last confirmed 45 days ago
Retailer 4
-
$359 AUD
View
Price last confirmed 42 days ago
A
Retailer 5
-
$363 AUD
View
Retailer 6
-
$363 AUD
View
Price last confirmed 12 days ago
B+
Retailer 7
-
$443 AUD
View
A
Retailer 8
-
$586 AUD
View
A
Retailer 9
-
$600 AUD
View
B+
Retailer 10
-
$666 AUD
View
B+
Retailer 11
-
$727 AUD
View
B+
Retailer 12
-
$740 AUD
View
B+
Retailer 13
-
$1,050 AUD
View
B+
Retailer 14
-
$1,113 AUD
View
B
Retailer 15
-
$1,166 AUD
View
B
Retailer 16
-
$1,528 AUD
View
Most Expensive
B
Brilliant Earth
21117473A · Nov 5
$2,028 AUD
$1,420 USD
View
16 more retailers have this diamond
Prices start from $293 AUDSave up to $1,736 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
1.50ct Round
$293 AUD