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Radiant|Lab Grown|IGI

1.40ct E SI1 Radiant Lab Grown Diamond

VG • E/SI1 • IGI LG691547727

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

Certificate IGI LG691547727

Diamond specifications and retailer prices

From $404 USD
As of October 27, 2026
Save $707 USD (64%) vs most expensive(unlock to see where)
6 retailers carry this diamond
Most expensive: $1,111 USD at MOH London · As of October 29, 2026
View at MOH London

About this 1.4ct lab-grown radiant diamond

This 1.4ct lab-grown radiant sits in the one-and-a-quarter to one-and-a-half carat band, graded E colour (colourless) and SI1 clarity (slightly-included), with a very-good cut grade and certified by IGI LG691547727 or 691547727. Listed at 6 retailers as of October 27, 2026, with prices from $404 to $1,111, a $707 spread on the same certified stone. MOH London lists it at $1,111. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

1.40
Carat
E
Color
SI1
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle45.9°
Pavilion angle31.5°
OriginLab Grown
Grading LabIGI
CertificateIGI LG691547727
Dimensions7.83 × 5.54 × 3.59 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
7.83 mm5.54 mm1.40 ctE / SI1
OriginLab Grown
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG691547727
Side View
Table 64.0%Crown 45.9°Girdle: MED-STKPavilion 31.5°Culet: NoneDepth 64.8%

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: $1,111 USD|Low: $404 USD|High: $1,119 USD|Avg: $607 USD|+0.6%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
October 29, 2026
Retailer 6$404 USD
Retailer 4$433 USD
Retailer 5$502 USD
Retailer 2$512 USD
Retailer 3$735 USD
MOH London$1,111 USD

39 data points across 6 retailers

6 retailers$404 USD to $1,111 USD

A
Cheapest Retailer
-
$404 USD
B+
Retailer 2
-
$433 USD
View
B+
Retailer 3
-
$502 USD
View
B+
Retailer 4
-
$512 USD
£403 GBP
View
B
Retailer 5
-
$735 USD
View
Price last confirmed 8 days ago
Most Expensive
B
MOH London
LG691547727 · Oct 29
$1,111 USD
£875 GBP
View
5 more retailers have this diamond
Prices start from $404 USDSave up to $707 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
1.40ct Radiant
$404 USD