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Radiant|Lab Grown|IGI

1.50ct D SI1 Radiant Lab Grown Diamond

ID • D/SI1 • IGI LG474119436

Shape and cutting style on the report: Cut cornered rectangular modified brilliant

Certificate IGI LG474119436

Diamond specifications and retailer prices

From $187 USD
As of October 27, 2026
Save $1,613 USD (90%) vs most expensive(unlock to see where)
9 retailers carry this diamond
Most expensive: $1,800 USD at Do Amore Diamonds · As of October 29, 2026
View at Do Amore Diamonds

About this 1.5ct lab-grown radiant diamond

This 1.5ct lab-grown radiant sits in the one-and-a-half to two carat band, graded D colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG474119436 or 474119436. Listed at 9 retailers as of October 27, 2026, with prices from $187 to $1,800, a $1,613 spread on the same certified stone. Do Amore Diamonds lists it at $1,800. 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
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle44.8°
Pavilion angle32.3°
OriginLab Grown
Grading LabIGI
CertificateIGI LG474119436
Dimensions7.25 × 5.78 × 3.96 mm
L/W Ratio1.25
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
7.25 mm5.78 mm1.50 ctD / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG474119436
Side View
Table 68.5%Crown 44.8°Girdle: MED-STKPavilion 32.3°Culet: NoneDepth 68.5%

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 27
Current: $1,800 USD|Low: $145 USD|High: $1,820 USD|Avg: $740 USD|-1.1%
Do Amore Diamonds
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
October 29, 2026
Retailer 6$187 USD
Retailer 8$210 USD
Retailer 7$408 USD
Retailer 3$456 USD
Retailer 9$524 USD
Retailer 12$549 USD
Retailer 4$635 USD
Retailer 5$750 USD
Retailer 10$775 USD
Retailer 2$1,034 USD
Retailer 11$1,390 USD
Do Amore Diamonds$1,800 USD

15 data points across 12 retailers

9 retailers$187 USD to $1,800 USD

A
Cheapest Retailer
-
$187 USD
A
Retailer 2
-
$210 USD
View
Final sale: no returns
A
Retailer 3
-
$217 USD
View
B+
Retailer 4
-
$408 USD
View
B
Retailer 5
-
$750 USD
View
B
Retailer 6
-
$825 USD
View
B
Retailer 7
-
$910 USD
£716 GBP
View
B
Retailer 8
-
$1,034 USD
£814 GBP
View
Most Expensive
B
Do Amore Diamonds
27-E16B57DA1 · Oct 29
$1,800 USD
View
8 more retailers have this diamond
Prices start from $187 USDSave up to $1,613 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 Radiant
$187 USD