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Round|Lab Grown|IGI

1.03ct F SI1 Round Lab Grown Diamond

ID • F/SI1 • IGI LG851687494

Shape and cutting style on the report: Round brilliant

Certificate IGI LG851687494

Diamond specifications and retailer prices

From $329 AUD
As of November 6, 2026
Save $1,667 AUD (84%) vs most expensive(unlock to see where)
5 retailers carry this diamond
Most expensive: $1,996 AUD at MOH London · As of November 5, 2026
View at MOH London

About this 1.03ct lab-grown round diamond

This 1.03ct lab-grown round 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 LG851687494 or 851687494. Listed at 5 retailers as of November 5, 2026, with prices from $329 to $1,996, a $1,667 spread on the same certified stone. MOH London lists it at $1,996. 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

1.03
Carat
F
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.8°
Pavilion angle40.6°
OriginLab Grown
Grading LabIGI
CertificateIGI LG851687494
Dimensions6.50 × 6.46 × 3.99 mm
L/W Ratio1.01
Girdle conditionFaceted
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
6.50 mm6.46 mm1.03 ctF / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG851687494
Side View
Table 58.0%Crown 35.8°Girdle: MediumPavilion 40.6°Culet: NoneDepth 61.6%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
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Price History

Last verified: Nov 6
Current: $1,996 AUD|Low: $329 AUD|High: $2,001 AUD|Avg: $798 AUD|-0.3%
MOH London
Retailer 2
Retailer 3
Retailer 4
November 6, 2026
Retailer 4$329 AUD
Retailer 3$397 AUD
Retailer 2$401 AUD
MOH London$1,996 AUD

6 data points across 4 retailers

5 retailers$329 AUD to $1,996 AUD

B+
Cheapest Retailer
-
$329 AUD
A
Retailer 2
-
$397 AUD
View
A
Retailer 3
-
$401 AUD
View
B
Retailer 4
-
$800 AUD
View
Most Expensive
B
MOH London
LG851687494 · Nov 5
$1,996 AUD
£1,100 GBP
View
4 more retailers have this diamond
Prices start from $329 AUDSave up to $1,667 AUD

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
1.03ct Round
$329 AUD