Round|Lab Grown|IGI

1.50ct F SI1 Round Lab Grown Diamond

ID • F/SI1 • IGI LG794627540

Shape and cutting style on the report: Round brilliant

Certificate IGI LG794627540

Diamond specifications and retailer prices

From $227 USD
As of November 5, 2026
Save $1,053 USD (82%) vs most expensive(unlock to see where)
22 retailers carry this diamond
Most expensive: $1,280 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 F colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG794627540 or 794627540. Listed at 22 retailers as of November 5, 2026, with prices from $227 to $1,280, a $1,053 spread on the same certified stone. Brilliant Earth lists it at $1,280. 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
F
Color
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33.1°
Pavilion angle41.1°
OriginLab Grown
Grading LabIGI
CertificateIGI LG794627540
Dimensions7.44 × 7.42 × 4.48 mm
L/W Ratio1.00
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
7.44 mm7.42 mm1.50 ctF / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG794627540
Side View
Table 59.0%Crown 33.1°Girdle: MED-STKPavilion 41.1°Culet: NoneDepth 60.3%

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 5
Current: $1,280 USD|Low: $225 USD|High: $1,280 USD|Avg: $603 USD|+1.6%
Brilliant Earth
Retailer 2
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Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Retailer 14
Retailer 15
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Retailer 18
November 6, 2026
Retailer 9$227 USD
Retailer 16$253 USD
Retailer 18$263 USD
Retailer 4$281 USD
Retailer 5$282 USD
Retailer 6$479 USD
Retailer 2$487 USD
Retailer 11$514 USD
Retailer 12$519 USD
Retailer 3$534 USD
Retailer 17$564 USD
Retailer 14$730 USD
Retailer 10$905 USD
Retailer 15$908 USD
Retailer 8$957 USD
Retailer 13$1,125 USD
Retailer 7$1,279 USD
Brilliant Earth$1,280 USD

29 data points across 18 retailers

22 retailers$227 USD to $1,280 USD

A
Cheapest Retailer
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$227 USD
A
Retailer 2
-
$253 USD
View
Final sale: no returns
Retailer 3
-
$262 USD
View
Price last confirmed 66 days ago
A
Retailer 4
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$263 USD
View
A
Retailer 5
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$281 USD
View
Retailer 6
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$282 USD
View
Price last confirmed 12 days ago
A
Retailer 7
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$431 USD
View
A
Retailer 8
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$479 USD
View
A
Retailer 9
-
$487 USD
View
A
Retailer 10
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$514 USD
View
A
Retailer 11
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$519 USD
View
B+
Retailer 12
-
$534 USD
View
B+
Retailer 13
-
$564 USD
View
B+
Retailer 14
-
$730 USD
View
B+
Retailer 15
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$782 USD
View
Retailer 16
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$897 USD
View
Price last confirmed 46 days ago
B
Retailer 17
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$905 USD
View
B
Retailer 18
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$908 USD
View
B
Retailer 19
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$957 USD
View
B
Retailer 20
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$1,125 USD
View
B
Retailer 21
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$1,279 USD
View
Most Expensive
B
Brilliant Earth
20701253A · Nov 5
$1,280 USD
View
21 more retailers have this diamond
Prices start from $227 USDSave up to $1,053 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
$227 USD