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Radiant|Lab Grown|IGI

1.30ct F SI1 Radiant Lab Grown Diamond

ID • F/SI1 • IGI LG514268643

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

Certificate IGI LG514268643

Diamond specifications and retailer prices

From $1,183 AUD
As of November 6, 2026
Save $1,972 AUD (63%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: $5,131 AUD at MOH London · As of November 5, 2026
View at MOH London

About this 1.3ct lab-grown radiant diamond

This 1.3ct lab-grown radiant sits in the one-and-a-quarter to one-and-a-half carat band, graded F colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG514268643 or 514268643. Listed at 13 retailers as of November 4, 2026, with a 167% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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

1.30
Carat
F
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle45.5°
Pavilion angle33.1°
OriginLab Grown
Grading LabIGI
CertificateIGI LG514268643
Dimensions7.77 × 5.36 × 3.45 mm
L/W Ratio1.45
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process and may include post-growth treatment Type IIa
Top View
7.77 mm5.36 mm1.30 ctF / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG514268643
Side View
Table 66.5%Crown 45.5°Girdle: MediumPavilion 33.1°Culet: NoneDepth 64.4%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 6
Current: $5,131 AUD|Low: $1,135 AUD|High: $5,212 AUD|Avg: $2,163 AUD|-0.3%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
November 7, 2026
Retailer 4$1,183 AUD
Retailer 9$1,324 AUD
Retailer 6$1,372 AUD
Retailer 5$1,470 AUD
Retailer 8$1,630 AUD
Retailer 2$2,090 AUD
Retailer 7$2,211 AUD
Retailer 3$3,155 AUD
MOH London$5,131 AUD

44 data points across 9 retailers

13 retailers$1,183 AUD to $3,155 AUD

B+
Cheapest Retailer
-
$1,183 AUD
B+
Retailer 2
-
$1,287 AUD
View
B
Retailer 3
-
$1,324 AUD
View
Final sale: no returns
B
Retailer 4
-
$1,372 AUD
View
Retailer 5
-
$1,372 AUD
View
Price last confirmed 26 days ago
B
Retailer 6
-
$1,470 AUD
View
B
Retailer 7
-
$1,630 AUD
View
B
Retailer 8
-
$2,090 AUD
View
B
Retailer 9
-
$2,211 AUD
View
B
Retailer 10
-
$3,155 AUD
View
Retailer 11
-
$3,858 AUD
View
Price under review
Retailer 12
-
$4,193 AUD
View
Price under review
Most Expensive
MOH London
LG514268643 · Nov 5
$5,131 AUD
£2,776 GBP
View
Price under review
12 more retailers have this diamond
Prices start from $1,183 AUDSave up to $1,972 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.

B+
1.30ct Radiant
$1,183 AUD