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Marquise|Lab Grown|IGI

1.05ct F SI1 Marquise Lab Grown Diamond

ID • F/SI1 • IGI LG851608075

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG851608075

Diamond specifications and retailer prices

From $250 USD
As of November 1, 2026
Save $70 USD (22%) vs most expensive(unlock to see where)
2 retailers carry this diamond
Most expensive: $320 USD at Adiamor · As of November 1, 2026
View at Adiamor

About this 1.05ct lab-grown marquise diamond

This 1.05ct lab-grown marquise sits in the classic one-carat band, graded F colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG851608075 or 851608075. Listed at 2 retailers as of November 1, 2026, with prices from $250 to $320, a $70 spread on the same certified stone. Adiamor lists it at $320. 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
F
Color
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33°
Pavilion angle41.1°
OriginLab Grown
Grading LabIGI
CertificateIGI LG851608075
Dimensions10.86 × 5.30 × 3.32 mm
L/W Ratio2.05
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
10.86 mm5.30 mm1.05 ctF / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG851608075
Side View
Table 59.0%Crown 33°Girdle: MED-STKPavilion 41.1°Culet: NoneDepth 62.6%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
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Price History

Last verified: Nov 1
Current: $320 USD|Low: $250 USD|High: $320 USD|Avg: $273 USD
Adiamor
Retailer 2
October 31, 2026
Retailer 2$250 USD
Adiamor$320 USD

2 data points across 2 retailers

2 retailers$250 USD to $320 USD

B+
Cheapest Retailer
-
$250 USD
Most Expensive
B+
Adiamor
D-82898177 · Nov 1
$320 USD
View
1 more retailer has this diamond
Prices start from $250 USDSave up to $70 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.

B+
1.05ct Marquise
$250 USD