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Marquise|Lab Grown|IGI

0.54ct E SI1 Marquise Lab Grown Diamond

ID • E/SI1 • IGI LG785606166

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG785606166

Diamond specifications and retailer prices

From $213 USD
As of October 23, 2026
Save $187 USD (47%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: $742 USD at MOH London · As of October 21, 2026
View at MOH London

About this 0.54ct lab-grown marquise diamond

This 0.54ct lab-grown marquise sits in the half to three-quarter carat band, graded E colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG785606166 or 785606166. Listed at 11 retailers as of October 23, 2026, with a 88% 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

0.54
Carat
E
Color
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishVery Good
SymmetryVery Good
FluorescenceNone
Crown angle29°
Pavilion angle41.8°
OriginLab Grown
Grading LabIGI
CertificateIGI LG785606166
Dimensions8.18 × 4.35 × 2.70 mm
L/W Ratio1.88
Girdle conditionFaceted
Culet sizePointed
Cert comments
As Grown - No indication of post-growth treatment This Laboratory Grown Diamond was created by High Pressure High Temperature (HPHT) growth process Type II
Top View
8.18 mm4.35 mm0.54 ctE / SI1
OriginLab Grown
CutIdeal
PolishVery Good
SymmetryVery Good
FluorescenceNone
CertificateIGI LG785606166
Side View
Table 61.0%Crown 29°Girdle: MED-STKPavilion 41.8°Culet: NoneDepth 62.1%

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 23
Current: $742 USD|Low: $81 USD|High: $1,088 USD|Avg: $268 USD|-31.9%
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 22, 2026
Retailer 9$81 USD
Retailer 10$91 USD
Retailer 6$107 USD
Retailer 4$135 USD
Retailer 2$168 USD
Retailer 3$170 USD
Retailer 7$213 USD
Retailer 11$219 USD
Retailer 13$245 USD
Retailer 12$257 USD
Retailer 8$335 USD
Retailer 5$400 USD
MOH London$742 USD

26 data points across 13 retailers

11 retailers$213 USD to $400 USD

A
Retailer 1
-
$81 USD
Price last confirmed 8 days ago
A
Retailer 2
-
$107 USD
View
Price last confirmed 7 days ago
A
Retailer 3
-
$135 USD
View
Price last confirmed 13 days ago
A
Retailer 4
-
$168 USD
£132 GBP
View
Price last confirmed 7 days ago
A
Retailer 5
-
$170 USD
View
Price last confirmed 11 days ago
A
Retailer 6
-
$213 USD
View
A
Retailer 7
-
$219 USD
View
Price last confirmed 8 days ago
B+
Retailer 8
-
$257 USD
£202 GBP
View
B+
Retailer 9
-
$335 USD
View
Price last confirmed 8 days ago
B
Retailer 10
-
$400 USD
View
Most Expensive
B
MOH London
LG785606166 · Oct 21
$742 USD
£584 GBP
View
Price last confirmed 8 days ago
10 more retailers have this diamond
Prices start from $213 USDSave up to $187 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
0.54ct Marquise
$213 USD