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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 €493 EUR
£434 GBP
As of October 31, 2026
Save €125 EUR (20%) vs most expensive(unlock to see where)
2 retailers carry this diamond
Most expensive: €618 EUR at Brilliant Earth · As of October 31, 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 October 31, 2026, with prices from €493 to €618, a €125 spread on the same certified stone. Brilliant Earth lists it at €618. 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
Color
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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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 31
Current: €618 EUR|Low: €109 EUR|High: €1,119 EUR|Avg: €516 EUR|-5.5%
Brilliant Earth
Retailer 2
Retailer 3
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Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
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Retailer 13
June 13, 2026
Retailer 2€109 EUR
Retailer 12€206 EUR
Retailer 6€316 EUR
Retailer 13€341 EUR
Retailer 9€459 EUR
Retailer 10€470 EUR
Retailer 5€484 EUR
Retailer 11€500 EUR
Retailer 7€505 EUR
Retailer 8€505 EUR
Brilliant Earth€618 EUR
Retailer 3€731 EUR
Retailer 4€1,101 EUR

52 data points across 13 retailers

2 retailers€493 EUR to €618 EUR

B+
Cheapest Retailer
-
€493 EUR
£434 GBP
Most Expensive
B
Brilliant Earth
10031847Y · Oct 31
€618 EUR
$690 USD
View
1 more retailer has this diamond
Prices start from €493 EURSave up to €125 EUR

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
€493 EUR