Radiant|Lab Grown|IGI

1.15ct E SI1 Radiant Lab Grown Diamond

ID • E/SI1 • IGI LG758503995

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

Certificate IGI LG758503995

Diamond specifications and retailer prices

From $363 USD
£286 GBP
As of October 30, 2026
Save $596 USD (62%) vs most expensive(unlock to see where)
7 retailers carry this diamond
Most expensive: $959 USD at MOH London · As of October 25, 2026
View at MOH London

About this 1.15ct lab-grown radiant diamond

This 1.15ct lab-grown radiant sits in the classic one-carat band, graded E colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG758503995 or 758503995. Listed at 7 retailers as of October 25, 2026, with prices from $363 to $959, a $596 spread on the same certified stone. MOH London lists it at $959. 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

1.15
Carat
E
Color
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle39.3°
Pavilion angle30.9°
OriginLab Grown
Grading LabIGI
CertificateIGI LG758503995
Dimensions8.03 × 5.17 × 3.15 mm
L/W Ratio1.55
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
8.03 mm5.17 mm1.15 ctE / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG758503995
Side View
Table 65.0%Crown 39.3°Girdle: MediumPavilion 30.9°Culet: NoneDepth 60.9%

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: $959 USD|Low: $304 USD|High: $969 USD|Avg: $483 USD|+1.1%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
October 30, 2026
Retailer 2$363 USD
Retailer 6$365 USD
Retailer 4$368 USD
Retailer 7$368 USD
Retailer 3$485 USD
Retailer 5$527 USD
MOH London$959 USD

30 data points across 7 retailers

7 retailers$363 USD to $959 USD

A
Cheapest Retailer
-
$363 USD
£286 GBP
A
Retailer 2
-
$365 USD
View
A
Retailer 3
-
$368 USD
€350 EUR
View
A
Retailer 4
-
$368 USD
View
Retailer 5
-
$485 USD
View
Price last confirmed 11 days ago
B+
Retailer 6
-
$527 USD
View
Most Expensive
B
MOH London
LG758503995 · Oct 25
$959 USD
£755 GBP
View
6 more retailers have this diamond
Prices start from $363 USDSave up to $596 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
1.15ct Radiant
$363 USD