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Radiant|Lab Grown|IGI

1.43ct H SI1 Radiant Lab Grown Diamond

ID • H/SI1 • IGI LG506195332

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

Certificate IGI LG506195332

Diamond specifications and retailer prices

From $805 USD
As of October 30, 2026
Save $2,714 USD (77%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: $3,519 USD at MOH London · As of October 29, 2026
View at MOH London

About this 1.43ct lab-grown radiant diamond

This 1.43ct lab-grown radiant sits in the one-and-a-quarter to one-and-a-half carat band, graded H colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG506195332 or 506195332. Listed at 10 retailers as of October 29, 2026, with prices from $805 to $3,519, a $2,714 spread on the same certified stone. MOH London lists it at $3,519. 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

1.43
Carat
H
Color
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36.5°
Pavilion angle29.1°
OriginLab Grown
Grading LabIGI
CertificateIGI LG506195332
Dimensions8.07 × 5.62 × 3.58 mm
L/W Ratio1.44
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process and may include post-growth treatment Type IIa
Top View
8.07 mm5.62 mm1.43 ctH / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG506195332
Side View
Table 65.5%Crown 36.5°Girdle: MediumPavilion 29.1°Culet: NoneDepth 63.7%

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 30
Current: $3,519 USD|Low: $773 USD|High: $3,547 USD|Avg: $1,644 USD|+0.5%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
October 30, 2026
Retailer 5$805 USD
Retailer 9$876 USD
Retailer 2$920 USD
Retailer 6$934 USD
Retailer 3$1,110 USD
Retailer 10$1,453 USD
Retailer 8$1,506 USD
Retailer 4$2,221 USD
Retailer 7$2,625 USD
MOH London$3,519 USD

23 data points across 10 retailers

10 retailers$805 USD to $3,519 USD

A
Cheapest Retailer
-
$805 USD
B+
Retailer 2
-
$876 USD
View
A
Retailer 3
-
$920 USD
View
B+
Retailer 4
-
$934 USD
View
Retailer 5
-
$934 USD
View
Price last confirmed 19 days ago
B+
Retailer 6
-
$1,110 USD
View
B+
Retailer 7
-
$1,506 USD
View
B+
Retailer 8
-
$2,221 USD
View
B+
Retailer 9
-
$2,625 USD
View
Most Expensive
B+
MOH London
LG506195332 · Oct 29
$3,519 USD
£2,771 GBP
View
9 more retailers have this diamond
Prices start from $805 USDSave up to $2,714 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
1.43ct Radiant
$805 USD