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Radiant|Lab Grown|IGI

1.16ct E SI1 Radiant Lab Grown Diamond

ID • E/SI1 • IGI LG623426606

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

Certificate IGI LG623426606

Diamond specifications and retailer prices

From $800 AUD
As of November 5, 2026
Save $204 AUD (20%) vs most expensive(unlock to see where)
2 retailers carry this diamond
Most expensive: $1,004 AUD at Brilliant Earth · As of November 6, 2026
View at Brilliant Earth

About this 1.16ct lab-grown radiant diamond

This 1.16ct lab-grown radiant sits in the classic one-carat band, graded E colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG623426606 or 623426606. Listed at 2 retailers as of November 5, 2026, with prices from $800 to $1,004, a $204 spread on the same certified stone. Brilliant Earth lists it at $1,004. 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

1.16
Carat
E
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle48.2°
Pavilion angle34°
OriginLab Grown
Grading LabIGI
CertificateIGI LG623426606
Dimensions7.45 × 5.13 × 3.47 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
7.45 mm5.13 mm1.16 ctE / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG623426606
Side View
Table 67.0%Crown 48.2°Girdle: MediumPavilion 34°Culet: NoneDepth 67.6%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
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Price History

Last verified: Nov 5
Current: $1,004 AUD|Low: $178 AUD|High: $1,819 AUD|Avg: $838 AUD|-5.5%
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
June 13, 2026
Retailer 2$178 AUD
Retailer 12$335 AUD
Retailer 6$514 AUD
Retailer 13$555 AUD
Retailer 9$745 AUD
Retailer 10$764 AUD
Retailer 5$787 AUD
Retailer 11$814 AUD
Retailer 7$819 AUD
Retailer 8$821 AUD
Brilliant Earth$1,004 AUD
Retailer 3$1,188 AUD
Retailer 4$1,790 AUD

52 data points across 13 retailers

2 retailers$800 AUD to $1,004 AUD

B+
Cheapest Retailer
-
$800 AUD
Most Expensive
B
Brilliant Earth
10031847Y · Nov 6
$1,004 AUD
$690 USD
View
1 more retailer has this diamond
Prices start from $800 AUDSave up to $204 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+
1.16ct Radiant
$800 AUD