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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 $992 NZD
As of November 5, 2026
Save $253 NZD (20%) vs most expensive(unlock to see where)
2 retailers carry this diamond
Most expensive: $1,245 NZD 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 $992 to $1,245, a $253 spread on the same certified stone. Brilliant Earth lists it at $1,245. 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: $1,245 NZD|Low: $220 NZD|High: $2,255 NZD|Avg: $1,039 NZD|-5.5%
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
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Retailer 13
June 13, 2026
Retailer 2$220 NZD
Retailer 12$415 NZD
Retailer 6$637 NZD
Retailer 13$687 NZD
Retailer 9$924 NZD
Retailer 10$947 NZD
Retailer 5$976 NZD
Retailer 11$1,008 NZD
Retailer 7$1,016 NZD
Retailer 8$1,017 NZD
Brilliant Earth$1,245 NZD
Retailer 3$1,472 NZD
Retailer 4$2,219 NZD

52 data points across 13 retailers

2 retailers$992 NZD to $1,245 NZD

B+
Cheapest Retailer
-
$992 NZD
Most Expensive
B
Brilliant Earth
10031847Y · Nov 6
$1,245 NZD
$690 USD
View
1 more retailer has this diamond
Prices start from $992 NZDSave up to $253 NZD

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
$992 NZD