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Radiant|Lab Grown|IGI

1.00ct J SI2 Radiant Lab Grown Diamond

VG • J/SI2 • IGI LG407988532

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

Certificate IGI LG407988532

Diamond specifications and retailer prices

From $743 SGD
As of November 6, 2026
Save $3,619 SGD (83%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: $4,362 SGD at MOH London · As of November 3, 2026
View at MOH London

About this 1ct lab-grown radiant diamond

This 1ct lab-grown radiant sits in the classic one-carat band, graded J colour (near-colourless) and SI2 clarity (slightly-included), with a very-good cut grade and certified by IGI LG407988532 or 407988532. Listed at 10 retailers as of November 3, 2026, with prices from $743 to $4,362, a $3,619 spread on the same certified stone. MOH London lists it at $4,362. 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

1.00
Carat
J
Colour
SI2
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryVery Good
FluorescenceNone
Crown angle48.7°
Pavilion angle33°
OriginLab Grown
Grading LabIGI
CertificateIGI LG407988532
Dimensions6.41 × 4.97 × 3.55 mm
L/W Ratio1.29
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory grown diamond was created by chemical vapor deposition process (CVD) Type IIa
Top View
6.41 mm4.97 mm1.00 ctJ / SI2
OriginLab Grown
CutVery Good
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateIGI LG407988532
Side View
Table 71.0%Crown 48.7°Girdle: MediumPavilion 33°Culet: NoneDepth 71.4%

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: Nov 6
Current: $4,362 SGD|Low: $743 SGD|High: $4,421 SGD|Avg: $1,923 SGD|-1.0%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
November 1, 2026
Retailer 2$743 SGD
Retailer 4$1,003 SGD
Retailer 8$1,092 SGD
Retailer 9$1,123 SGD
Retailer 5$1,164 SGD
Retailer 10$1,798 SGD
Retailer 7$1,879 SGD
Retailer 3$2,767 SGD
Retailer 6$3,272 SGD
MOH London$4,362 SGD

13 data points across 10 retailers

10 retailers$743 SGD to $4,362 SGD

A
Cheapest Retailer
-
$743 SGD
B+
Retailer 2
-
$1,003 SGD
View
B+
Retailer 3
-
$1,092 SGD
View
B+
Retailer 4
-
$1,123 SGD
View
Final sale: no returns
B+
Retailer 5
-
$1,164 SGD
View
Retailer 6
-
$1,164 SGD
View
Price last confirmed 26 days ago
B
Retailer 7
-
$1,879 SGD
View
C
Retailer 8
-
$2,767 SGD
View
C
Retailer 9
-
$3,272 SGD
View
Most Expensive
C
MOH London
LG407988532 · Nov 3
$4,362 SGD
£2,680 GBP
View
9 more retailers have this diamond
Prices start from $743 SGDSave up to $3,619 SGD

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
1.00ct Radiant
$743 SGD