Radiant|Lab Grown|IGI

1.59ct E SI1 Radiant Lab Grown Diamond

EX • E/SI1 • IGI LG761566173

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

Certificate IGI LG761566173

Diamond specifications and retailer prices

From $263 USD
As of October 27, 2026
Save $1,046 USD (80%) vs most expensive(unlock to see where)
7 retailers carry this diamond
Most expensive: $1,309 USD at MOH London · As of October 26, 2026
View at MOH London

About this 1.59ct lab-grown radiant diamond

This 1.59ct lab-grown radiant sits in the one-and-a-half to two carat band, graded E colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG761566173 or 761566173. Listed at 7 retailers as of October 26, 2026, with prices from $263 to $1,309, a $1,046 spread on the same certified stone. MOH London lists it at $1,309. 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

1.59
Carat
E
Color
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle45.8°
Pavilion angle34.6°
OriginLab Grown
Grading LabIGI
CertificateIGI LG761566173
Dimensions8.05 × 5.72 × 3.89 mm
L/W Ratio1.41
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
8.05 mm5.72 mm1.59 ctE / SI1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG761566173
Side View
Table 64.0%Crown 45.8°Girdle: MED-STKPavilion 34.6°Culet: NoneDepth 68.0%

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: $1,309 USD|Low: $253 USD|High: $1,323 USD|Avg: $764 USD|+0.1%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
October 28, 2026
Retailer 4$263 USD
Retailer 7$305 USD
Retailer 6$544 USD
Retailer 2$545 USD
Retailer 10$627 USD
Retailer 8$671 USD
Retailer 9$875 USD
Retailer 3$1,003 USD
Retailer 5$1,049 USD
MOH London$1,309 USD

12 data points across 10 retailers

7 retailers$263 USD to $1,309 USD

A
Cheapest Retailer
-
$263 USD
A
Retailer 2
-
$305 USD
View
B+
Retailer 3
-
$544 USD
View
A
Retailer 4
-
$545 USD
View
B
Retailer 5
-
$1,003 USD
View
B
Retailer 6
-
$1,049 USD
View
Most Expensive
B
MOH London
LG761566173 · Oct 26
$1,309 USD
£1,031 GBP
View
6 more retailers have this diamond
Prices start from $263 USDSave up to $1,046 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
1.59ct Radiant
$263 USD