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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 $205 USD
As of November 1, 2026
Save $1,215 USD (86%) vs most expensive(unlock to see where)
17 retailers carry this diamond
Most expensive: $1,420 USD 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 $205 to $1,420, a $1,215 spread on the same certified stone. Brilliant Earth lists it at $1,420. 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
Color
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

How it works →
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: $1,420 USD|Low: $196 USD|High: $1,420 USD|Avg: $584 USD
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$205 USD
Retailer 3$254 USD
Retailer 14$254 USD
Retailer 2$310 USD
Retailer 8$410 USD
Retailer 6$420 USD
Retailer 11$466 USD
Retailer 5$509 USD
Retailer 12$518 USD
Retailer 10$735 USD
Retailer 7$779 USD
Retailer 4$816 USD
Retailer 9$1,070 USD
Brilliant Earth$1,420 USD

45 data points across 14 retailers

17 retailers$205 USD to $1,420 USD

Retailer 1
-
$205 USD
Price last confirmed 44 days ago
A
Retailer 2
-
$205 USD
View
Retailer 3
-
$237 USD
View
Price last confirmed 45 days ago
Retailer 4
-
$251 USD
View
Price last confirmed 42 days ago
A
Retailer 5
-
$254 USD
View
Retailer 6
-
$254 USD
View
Price last confirmed 12 days ago
B+
Retailer 7
-
$310 USD
View
A
Retailer 8
-
$410 USD
View
A
Retailer 9
-
$420 USD
View
B+
Retailer 10
-
$466 USD
View
B+
Retailer 11
-
$509 USD
View
B+
Retailer 12
-
$518 USD
View
B+
Retailer 13
-
$735 USD
View
B+
Retailer 14
-
$779 USD
View
B
Retailer 15
-
$816 USD
View
B
Retailer 16
-
$1,070 USD
View
Most Expensive
B
Brilliant Earth
21117473A · Nov 5
$1,420 USD
View
16 more retailers have this diamond
Prices start from $205 USDSave up to $1,215 USD

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
$205 USD