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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 $844 AUD
As of November 6, 2026
Save $4,109 AUD (83%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: $4,954 AUD 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 $844 to $4,954, a $4,109 spread on the same certified stone. MOH London lists it at $4,954. 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
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 6
Current: $4,954 AUD|Low: $844 AUD|High: $5,020 AUD|Avg: $2,184 AUD|-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$844 AUD
Retailer 4$1,140 AUD
Retailer 8$1,240 AUD
Retailer 9$1,275 AUD
Retailer 5$1,322 AUD
Retailer 10$2,042 AUD
Retailer 7$2,134 AUD
Retailer 3$3,142 AUD
Retailer 6$3,716 AUD
MOH London$4,954 AUD

13 data points across 10 retailers

10 retailers$844 AUD to $4,954 AUD

A
Cheapest Retailer
-
$844 AUD
B+
Retailer 2
-
$1,140 AUD
View
B+
Retailer 3
-
$1,240 AUD
View
B+
Retailer 4
-
$1,275 AUD
View
Final sale: no returns
B+
Retailer 5
-
$1,322 AUD
View
Retailer 6
-
$1,322 AUD
View
Price last confirmed 26 days ago
B
Retailer 7
-
$2,134 AUD
View
C
Retailer 8
-
$3,142 AUD
View
C
Retailer 9
-
$3,716 AUD
View
Most Expensive
C
MOH London
LG407988532 · Nov 3
$4,954 AUD
£2,680 GBP
View
9 more retailers have this diamond
Prices start from $844 AUDSave up to $4,109 AUD

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
$844 AUD