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Round|Lab Grown|IGI

1.50ct D SI2 Round Lab Grown Diamond

ID • D/SI2 • IGI LG843652623

Shape and cutting style on the report: Round brilliant

Certificate IGI LG843652623

Diamond specifications and retailer prices

From $250 USD
As of October 25, 2026
Save $1,090 USD (81%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: $1,340 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 D colour (colourless) and SI2 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG843652623 or 843652623. Listed at 10 retailers as of October 25, 2026, with prices from $250 to $1,340, a $1,090 spread on the same certified stone. Brilliant Earth lists it at $1,340. 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
D
Color
SI2
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle32.9°
Pavilion angle40.5°
OriginLab Grown
Grading LabIGI
CertificateIGI LG843652623
Dimensions7.39 × 7.34 × 4.50 mm
L/W Ratio1.01
Girdle conditionFaceted
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
7.39 mm7.34 mm1.50 ctD / SI2
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG843652623
Side View
Table 56.0%Crown 32.9°Girdle: MED-STKPavilion 40.5°Culet: NoneDepth 61.2%

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: Oct 25
Current: $1,340 USD|Low: $250 USD|High: $1,340 USD|Avg: $543 USD
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
October 30, 2026
Retailer 10$250 USD
Retailer 2$275 USD
Retailer 4$407 USD
Retailer 6$417 USD
Retailer 3$448 USD
Retailer 5$479 USD
Retailer 9$560 USD
Retailer 8$807 USD
Retailer 7$1,179 USD
Brilliant Earth$1,340 USD

13 data points across 10 retailers

10 retailers$250 USD to $1,340 USD

A
Cheapest Retailer
-
$250 USD
A
Retailer 2
-
$275 USD
View
Final sale: no returns
A
Retailer 3
-
$407 USD
£321 GBP
View
A
Retailer 4
-
$417 USD
€397 EUR
View
B+
Retailer 5
-
$448 USD
View
B+
Retailer 6
-
$479 USD
£377 GBP
View
B+
Retailer 7
-
$560 USD
View
B
Retailer 8
-
$807 USD
View
B
Retailer 9
-
$1,179 USD
£928 GBP
View
Most Expensive
B
Brilliant Earth
22327261A · Oct 29
$1,340 USD
View
9 more retailers have this diamond
Prices start from $250 USDSave up to $1,090 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
$250 USD