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Radiant|Lab Grown|IGI

5.38ct E SI1 Radiant Lab Grown Diamond

ID • E/SI1 • IGI LG551208000

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

Certificate IGI LG551208000

Diamond specifications and retailer prices

From $641 USD
As of October 27, 2026
Save $2,964 USD (82%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: $3,605 USD at Rare Carat · As of October 28, 2026
View at Rare Carat

About this 5.38ct lab-grown radiant diamond

This 5.38ct lab-grown radiant sits in the over five carat band, graded E colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG551208000 or 551208000. Listed at 13 retailers as of October 27, 2026, with prices from $641 to $3,605, a $2,964 spread on the same certified stone. Rare Carat lists it at $3,605. 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

5.38
Carat
E
Color
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle44.5°
Pavilion angle34.5°
OriginLab Grown
Grading LabIGI
CertificateIGI LG551208000
Dimensions12.55 × 8.51 × 5.69 mm
L/W Ratio1.47
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
12.55 mm8.51 mm5.38 ctE / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG551208000
Side View
Table 65.0%Crown 44.5°Girdle: ThickPavilion 34.5°Culet: NoneDepth 66.9%

Caratlytics Score

How it works →
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 27
Current: $3,605 USD|Low: $641 USD|High: $8,940 USD|Avg: $2,783 USD
Rare Carat
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
Retailer 16
Retailer 17
October 29, 2026
Retailer 5$641 USD
Retailer 3$697 USD
Retailer 10$743 USD
Retailer 14$883 USD
Retailer 11$920 USD
Retailer 13$1,154 USD
Retailer 2$1,184 USD
Retailer 17$1,215 USD
Retailer 6$1,632 USD
Retailer 15$2,090 USD
Retailer 16$2,280 USD
Retailer 4$2,565 USD
Retailer 12$3,148 USD
Rare Carat$3,605 USD
Retailer 8$4,455 USD
Retailer 7$6,351 USD
Retailer 9$8,940 USD

3 data points across 17 retailers

13 retailers$641 USD to $3,605 USD

A
Cheapest Retailer
-
$641 USD
A
Retailer 2
-
$697 USD
View
A
Retailer 3
-
$743 USD
View
A
Retailer 4
-
$883 USD
HK$6,900 HKD
View
A
Retailer 5
-
$920 USD
View
A
Retailer 6
-
$1,154 USD
View
A
Retailer 7
-
$1,184 USD
£932 GBP
View
B+
Retailer 8
-
$1,215 USD
View
B+
Retailer 9
-
$2,090 USD
View
B
Retailer 10
-
$2,280 USD
View
B
Retailer 11
-
$2,565 USD
View
B
Retailer 12
-
$3,148 USD
£2,479 GBP
View
Most Expensive
B
Rare Carat
KI0002080KF551 · Oct 28
$3,605 USD
View
12 more retailers have this diamond
Prices start from $641 USDSave up to $2,964 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
5.38ct Radiant
$641 USD