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Round|Lab Grown|IGI

5.57ct E SI1 Round Lab Grown Diamond

ID • E/SI1 • IGI LG737517112

Shape and cutting style on the report: Round brilliant

Certificate IGI LG737517112

Diamond specifications and retailer prices

From $626 USD
As of October 29, 2026
Save $2,436 USD (80%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: $5,060 USD at Rare Carat · As of October 21, 2026
View at Rare Carat

About this 5.57ct lab-grown round diamond

This 5.57ct lab-grown round 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 LG737517112 or 737517112. Listed at 11 retailers as of October 26, 2026, with a 389% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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

5.57
Carat
E
Color
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33.1°
Pavilion angle40.8°
OriginLab Grown
Grading LabIGI
CertificateIGI LG737517112
Dimensions11.55 × 11.47 × 6.87 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
11.55 mm11.47 mm5.57 ctE / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG737517112
Side View
Table 59.0%Crown 33.1°Girdle: MED-STKPavilion 40.8°Culet: NoneDepth 59.7%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 29
Current: $5,060 USD|Low: $601 USD|High: $5,362 USD|Avg: $1,931 USD|-5.6%
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
October 30, 2026
Retailer 10$626 USD
Retailer 3$681 USD
Retailer 2$966 USD
Retailer 6$1,164 USD
Retailer 12$1,209 USD
Retailer 4$1,222 USD
Retailer 9$1,854 USD
Retailer 8$1,855 USD
Retailer 11$2,041 USD
Retailer 5$2,413 USD
Retailer 13$3,053 USD
Retailer 7$3,062 USD
Rare Carat$5,060 USD

37 data points across 13 retailers

11 retailers$626 USD to $3,062 USD

A
Cheapest Retailer
-
$626 USD
A
Retailer 2
-
$681 USD
View
A
Retailer 3
-
$966 USD
£761 GBP
View
A
Retailer 4
-
$1,164 USD
€1,109 EUR
View
A
Retailer 5
-
$1,209 USD
View
B+
Retailer 6
-
$1,854 USD
View
B
Retailer 7
-
$1,855 USD
View
B+
Retailer 8
-
$2,041 USD
View
Retailer 9
-
$3,053 USD
SGD 4,126 SGD
View
Price last confirmed 18 days ago
B
Retailer 10
-
$3,062 USD
£2,411 GBP
View
Most Expensive
Rare Carat
LGRD50-21820 · Oct 21
$5,060 USD
View
Price last confirmed 10 days ago
10 more retailers have this diamond
Prices start from $626 USDSave up to $2,436 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
5.57ct Round
$626 USD