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Round|Lab Grown|IGI

1.50ct E SI1 Round Lab Grown Diamond

GD • E/SI1 • IGI LG772629927

Shape and cutting style on the report: Round brilliant

Certificate IGI LG772629927

Diamond specifications and retailer prices

From $204 USD
As of October 29, 2026
Save $1,216 USD (86%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: $1,420 USD at Brilliant Earth · As of October 29, 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 standard cut grade and certified by IGI LG772629927 or 772629927. Listed at 16 retailers as of October 29, 2026, with prices from $204 to $1,420, a $1,216 spread on the same certified stone. Brilliant Earth lists it at $1,420. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

1.50
Carat
E
Color
SI1
Clarity
Good
Cut

Specifications

CutGood
PolishVery Good
SymmetryExcellent
FluorescenceNone
Crown angle37.6°
Pavilion angle42.9°
OriginLab Grown
Grading LabIGI
CertificateIGI LG772629927
Dimensions7.07 × 7.15 × 4.75 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
7.07 mm7.15 mm1.50 ctE / SI1
OriginLab Grown
CutGood
PolishVery Good
SymmetryExcellent
FluorescenceNone
CertificateIGI LG772629927
Side View
Table 59.0%Crown 37.6°Girdle: MED-STKPavilion 42.9°Culet: NoneDepth 66.7%

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: Oct 29
Current: $1,420 USD|Low: $196 USD|High: $1,460 USD|Avg: $561 USD|-2.7%
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
October 29, 2026
Retailer 12$204 USD
Retailer 14$229 USD
Retailer 4$237 USD
Retailer 6$253 USD
Retailer 13$253 USD
Retailer 9$422 USD
Retailer 8$440 USD
Retailer 2$464 USD
Retailer 3$509 USD
Retailer 11$632 USD
Retailer 10$740 USD
Retailer 5$815 USD
Retailer 7$1,191 USD
Brilliant Earth$1,420 USD

43 data points across 14 retailers

16 retailers$204 USD to $1,420 USD

A
Cheapest Retailer
-
$204 USD
B+
Retailer 2
-
$229 USD
View
Final sale: no returns
B+
Retailer 3
-
$237 USD
View
B+
Retailer 4
-
$253 USD
View
B+
Retailer 5
-
$253 USD
View
B
Retailer 6
-
$342 USD
View
B+
Retailer 7
-
$420 USD
View
B+
Retailer 8
-
$422 USD
€402 EUR
View
B+
Retailer 9
-
$440 USD
£346 GBP
View
B+
Retailer 10
-
$464 USD
£365 GBP
View
B+
Retailer 11
-
$509 USD
View
B
Retailer 12
-
$632 USD
View
B
Retailer 13
-
$740 USD
View
B
Retailer 14
-
$815 USD
View
B
Retailer 15
-
$1,191 USD
£938 GBP
View
Most Expensive
C
Brilliant Earth
21312837A · Oct 29
$1,420 USD
View
15 more retailers have this diamond
Prices start from $204 USDSave up to $1,216 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
$204 USD