Marquise|Lab Grown|IGI

1.05ct E SI1 Marquise Lab Grown Diamond

ID • E/SI1 • IGI LG846656583

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG846656583

Diamond specifications and retailer prices

From $205 USD
HK$1,600 HKD
As of October 30, 2026
Save $415 USD (67%) vs most expensive(unlock to see where)
7 retailers carry this diamond
Most expensive: $620 USD at Brilliant Earth · As of October 29, 2026
View at Brilliant Earth

About this 1.05ct lab-grown marquise diamond

This 1.05ct lab-grown marquise sits in the classic one-carat band, graded E colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG846656583 or 846656583. Listed at 7 retailers as of October 29, 2026, with prices from $205 to $620, a $415 spread on the same certified stone. Brilliant Earth lists it at $620. 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

1.05
Carat
E
Color
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishVery Good
SymmetryExcellent
FluorescenceNone
Crown angle37.6°
Pavilion angle41.2°
OriginLab Grown
Grading LabIGI
CertificateIGI LG846656583
Dimensions10.56 × 5.19 × 3.30 mm
L/W Ratio2.03
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
10.56 mm5.19 mm1.05 ctE / SI1
OriginLab Grown
CutIdeal
PolishVery Good
SymmetryExcellent
FluorescenceNone
CertificateIGI LG846656583
Side View
Table 65.0%Crown 37.6°Girdle: MED-STKPavilion 41.2°Culet: NoneDepth 63.6%

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 30
Current: $515 USD|Low: $155 USD|High: $515 USD|Avg: $307 USD
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
October 28, 2026
Retailer 3$155 USD
Retailer 2$205 USD
Retailer 5$224 USD
Retailer 6$292 USD
Retailer 7$322 USD
Retailer 4$480 USD
Retailer 1$515 USD

3 data points across 7 retailers

7 retailers$205 USD to $620 USD

A
Cheapest Retailer
-
$205 USD
HK$1,600 HKD
A
Retailer 2
-
$224 USD
£177 GBP
View
A
Retailer 3
-
$292 USD
£230 GBP
View
A
Retailer 4
-
$322 USD
View
B
Retailer 5
-
$480 USD
SGD 648 SGD
View
B+
Retailer 6
-
$515 USD
View
Most Expensive
B
Brilliant Earth
22251229A · Oct 29
$620 USD
View
6 more retailers have this diamond
Prices start from $205 USDSave up to $415 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
1.05ct Marquise
$205 USD