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Radiant|Lab Grown|IGI

3.59ct E SI1 Radiant Lab Grown Diamond

ID • E/SI1 • IGI LG691518885

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

Certificate IGI LG691518885

Diamond specifications and retailer prices

From $377 USD
As of October 30, 2026
Save $1,458 USD (79%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: $1,835 USD at MOH London · As of October 29, 2026
View at MOH London

About this 3.59ct lab-grown radiant diamond

This 3.59ct lab-grown radiant sits in the three to five carat band, graded E colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG691518885 or 691518885. Listed at 12 retailers as of October 29, 2026, with prices from $377 to $1,835, a $1,458 spread on the same certified stone. MOH London lists it at $1,835. 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

3.59
Carat
E
Color
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle43.6°
Pavilion angle35.1°
OriginLab Grown
Grading LabIGI
CertificateIGI LG691518885
Dimensions10.95 × 7.45 × 4.94 mm
L/W Ratio1.47
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
10.95 mm7.45 mm3.59 ctE / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG691518885
Side View
Table 66.0%Crown 43.6°Girdle: Slightly ThickPavilion 35.1°Culet: NoneDepth 66.3%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 30
Current: $1,835 USD|Low: $377 USD|High: $6,010 USD|Avg: $1,635 USD
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Retailer 14
Retailer 15
October 30, 2026
Retailer 4$377 USD
Retailer 3$422 USD
Retailer 9$467 USD
Retailer 12$525 USD
Retailer 2$574 USD
Retailer 10$615 USD
Retailer 15$744 USD
Retailer 11$799 USD
Retailer 8$843 USD
Retailer 5$1,126 USD
Retailer 14$1,376 USD
Retailer 13$1,502 USD
MOH London$1,835 USD
Retailer 6$4,540 USD
Retailer 7$6,010 USD

4 data points across 15 retailers

12 retailers$377 USD to $1,835 USD

A
Cheapest Retailer
-
$377 USD
A
Retailer 2
-
$422 USD
View
A
Retailer 3
-
$467 USD
View
A
Retailer 4
-
$525 USD
HK$4,100 HKD
View
A
Retailer 5
-
$574 USD
£452 GBP
View
A
Retailer 6
-
$615 USD
View
B+
Retailer 7
-
$744 USD
View
A
Retailer 8
-
$799 USD
View
A
Retailer 9
-
$843 USD
£664 GBP
View
B+
Retailer 10
-
$1,376 USD
View
B+
Retailer 11
-
$1,502 USD
View
Most Expensive
B+
MOH London
LG691518885 · Oct 29
$1,835 USD
£1,445 GBP
View
11 more retailers have this diamond
Prices start from $377 USDSave up to $1,458 USD

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
3.59ct Radiant
$377 USD