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Round|Lab Grown|IGI

5.51ct E SI1 Round Lab Grown Diamond

ID • E/SI1 • IGI LG732570868

Shape and cutting style on the report: Round brilliant

Certificate IGI LG732570868

Diamond specifications and retailer prices

From $1,067 USD
As of October 29, 2026
Save $7,298 USD (87%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: $9,470 USD at Do Amore Diamonds · As of October 31, 2026
View at Do Amore Diamonds

About this 5.51ct lab-grown round diamond

This 5.51ct 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 LG732570868 or 732570868. Listed at 15 retailers as of October 29, 2026, with a 684% 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

5.51
Carat
E
Color
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.6°
Pavilion angle40.7°
OriginLab Grown
Grading LabIGI
CertificateIGI LG732570868
Dimensions11.31 × 11.23 × 6.96 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
11.31 mm11.23 mm5.51 ctE / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG732570868
Side View
Table 58.0%Crown 35.6°Girdle: MediumPavilion 40.7°Culet: NoneDepth 61.7%

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: $8,365 USD|Low: $1,024 USD|High: $9,470 USD|Avg: $3,041 USD|+22.2%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
October 31, 2026
Retailer 9$1,067 USD
Retailer 2$1,161 USD
Retailer 4$1,194 USD
Retailer 10$1,238 USD
Retailer 7$1,410 USD
Retailer 12$1,671 USD
Retailer 5$1,975 USD
Retailer 3$2,561 USD
Retailer 11$2,976 USD
Retailer 6$4,310 USD
Retailer 8$4,675 USD
Retailer 1$8,365 USD

45 data points across 12 retailers

15 retailers$1,067 USD to $8,365 USD

A
Cheapest Retailer
-
$1,067 USD
A
Retailer 2
-
$1,161 USD
View
A
Retailer 3
-
$1,194 USD
View
Final sale: no returns
A
Retailer 4
-
$1,238 USD
View
Retailer 5
-
$1,238 USD
View
Price last confirmed 18 days ago
B+
Retailer 6
-
$1,410 USD
View
B+
Retailer 7
-
$1,671 USD
View
B+
Retailer 8
-
$1,975 USD
£1,555 GBP
View
B+
Retailer 9
-
$2,216 USD
View
B
Retailer 10
-
$2,561 USD
View
B
Retailer 11
-
$2,976 USD
View
B
Retailer 12
-
$4,310 USD
View
Retailer 13
-
$4,675 USD
View
Price last confirmed 10 days ago
B
Retailer 14
-
$8,365 USD
View
Most Expensive
Do Amore Diamonds
27-5173B9BEF · Oct 31
$9,470 USD
View
Price under review
14 more retailers have this diamond
Prices start from $1,067 USDSave up to $7,298 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
5.51ct Round
$1,067 USD