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Radiant|Lab Grown|IGI

0.90ct D SI1 Radiant Lab Grown Diamond

VG • D/SI1 • IGI LG414079780

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

Certificate IGI LG414079780

Diamond specifications and retailer prices

From $254 USD
As of October 29, 2026
Save $958 USD (79%) vs most expensive(unlock to see where)
5 retailers carry this diamond
Most expensive: $1,212 USD at MOH London · As of October 29, 2026
View at MOH London

About this 0.9ct lab-grown radiant diamond

This 0.9ct lab-grown radiant sits in the just-under-one-carat band, graded D colour (colourless) and SI1 clarity (slightly-included), with a very-good cut grade and certified by IGI LG414079780 or 414079780. Listed at 5 retailers as of October 29, 2026, with prices from $254 to $1,212, a $958 spread on the same certified stone. MOH London lists it at $1,212. 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

0.90
Carat
D
Color
SI1
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33.1°
Pavilion angle38.2°
OriginLab Grown
Grading LabIGI
CertificateIGI LG414079780
Dimensions6.25 × 5.19 × 3.39 mm
L/W Ratio1.20
Cert comments
As Grown - No indication of post growth treatment. This Laboratory Grown Diamond was created by high pressure high temperature process (HPHT).
Top View
6.25 mm5.19 mm0.90 ctD / SI1
OriginLab Grown
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG414079780
Side View
Table 68.5%Crown 33.1°Girdle: MED-STKPavilion 38.2°Culet: NoneDepth 65.3%

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 29
Current: $1,212 USD|Low: $198 USD|High: $1,219 USD|Avg: $681 USD|-0.5%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
October 30, 2026
Retailer 4$254 USD
Retailer 3$282 USD
Retailer 2$294 USD
Retailer 5$389 USD
Retailer 6$840 USD
Retailer 7$1,080 USD
Retailer 8$1,080 USD
MOH London$1,212 USD

34 data points across 8 retailers

5 retailers$254 USD to $1,212 USD

A
Cheapest Retailer
-
$254 USD
A
Retailer 2
-
$282 USD
View
A
Retailer 3
-
$294 USD
£232 GBP
View
B+
Retailer 4
-
$389 USD
View
Most Expensive
B
MOH London
LG414079780 · Oct 29
$1,212 USD
£954 GBP
View
4 more retailers have this diamond
Prices start from $254 USDSave up to $958 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
0.90ct Radiant
$254 USD