CaratHunter
Plans
Round|Lab Grown|IGI

0.55ct I SI1 Round Lab Grown Diamond

EX • I/SI1 • IGI LG451055359

Shape and cutting style on the report: Round brilliant

Certificate IGI LG451055359

Diamond specifications and retailer prices

From $294 USD
As of October 29, 2026
Save $1,174 USD (80%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: $1,468 USD at MOH London · As of October 29, 2026
View at MOH London

About this 0.55ct lab-grown round diamond

This 0.55ct lab-grown round sits in the half to three-quarter carat band, graded I colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG451055359 or 451055359. Listed at 11 retailers as of October 29, 2026, with prices from $294 to $1,468, a $1,174 spread on the same certified stone. MOH London lists it at $1,468. 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

0.55
Carat
I
Color
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
Crown angle35.7°
Pavilion angle41.4°
OriginLab Grown
Grading LabIGI
CertificateIGI LG451055359
Dimensions5.18 × 5.21 × 3.28 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizePointed
Cert comments
undefined
Top View
5.18 mm5.21 mm0.55 ctI / SI1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateIGI LG451055359
Side View
Table 59.0%Crown 35.7°Girdle: MED-STKPavilion 41.4°Culet: NoneDepth 63.0%

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: $1,468 USD|Low: $282 USD|High: $1,477 USD|Avg: $626 USD|-0.5%
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
October 29, 2026
Retailer 7$294 USD
Retailer 12$329 USD
Retailer 3$341 USD
Retailer 8$360 USD
Retailer 9$364 USD
Retailer 11$364 USD
Retailer 4$520 USD
Retailer 10$597 USD
Retailer 2$675 USD
Retailer 5$727 USD
Retailer 6$1,119 USD
Retailer 13$1,171 USD
MOH London$1,468 USD

20 data points across 13 retailers

11 retailers$294 USD to $1,468 USD

A
Cheapest Retailer
-
$294 USD
A
Retailer 2
-
$329 USD
View
Final sale: no returns
A
Retailer 3
-
$341 USD
View
B+
Retailer 4
-
$360 USD
View
B+
Retailer 5
-
$364 USD
View
B+
Retailer 6
-
$364 USD
View
B+
Retailer 7
-
$597 USD
View
B+
Retailer 8
-
$675 USD
€643 EUR
View
B
Retailer 9
-
$1,119 USD
View
B
Retailer 10
-
$1,171 USD
View
Most Expensive
B
MOH London
LG451055359 · Oct 29
$1,468 USD
£1,156 GBP
View
10 more retailers have this diamond
Prices start from $294 USDSave up to $1,174 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
0.55ct Round
$294 USD