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Round|Lab Grown|IGI

1.03ct G SI1 Round Lab Grown Diamond

ID • G/SI1 • IGI LG839672512

Shape and cutting style on the report: Round brilliant

Certificate IGI LG839672512

Diamond specifications and retailer prices

From $198 AUD
$139 USD
As of October 29, 2026
Save $954 AUD (83%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: $1,153 AUD at MOH London · As of October 29, 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 G colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG839672512 or 839672512. Listed at 14 retailers as of October 29, 2026, with prices from $198 to $1,153, a $954 spread on the same certified stone. MOH London lists it at $1,153. 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
G
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.5°
Pavilion angle40.7°
OriginLab Grown
Grading LabIGI
CertificateIGI LG839672512
Dimensions6.44 × 6.48 × 4.00 mm
L/W Ratio1.01
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
6.44 mm6.48 mm1.03 ctG / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG839672512
Side View
Table 57.0%Crown 35.5°Girdle: MediumPavilion 40.7°Culet: NoneDepth 61.9%

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 29
Current: $1,153 AUD|Low: $198 AUD|High: $1,160 AUD|Avg: $527 AUD|-0.6%
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
Retailer 14
November 1, 2026
Retailer 12$198 AUD
Retailer 4$230 AUD
Retailer 11$245 AUD
Retailer 14$245 AUD
Retailer 8$416 AUD
Retailer 9$437 AUD
Retailer 2$454 AUD
Retailer 6$459 AUD
Retailer 7$547 AUD
Retailer 10$621 AUD
Retailer 13$677 AUD
Retailer 5$703 AUD
Retailer 3$788 AUD
MOH London$1,153 AUD

26 data points across 14 retailers

14 retailers$198 AUD to $1,153 AUD

A
Cheapest Retailer
-
$198 AUD
$139 USD
A
Retailer 2
-
$230 AUD
$161 USD
View
A
Retailer 3
-
$245 AUD
$172 USD
View
Retailer 4
-
$245 AUD
$172 USD
View
Price last confirmed 17 days ago
A
Retailer 5
-
$416 AUD
£230 GBP
View
A
Retailer 6
-
$437 AUD
€292 EUR
View
A
Retailer 7
-
$454 AUD
$318 USD
View
B+
Retailer 8
-
$459 AUD
$322 USD
View
B+
Retailer 9
-
$547 AUD
£302 GBP
View
B+
Retailer 10
-
$621 AUD
$435 USD
View
B
Retailer 11
-
$677 AUD
SGD 641 SGD
View
B+
Retailer 12
-
$703 AUD
$493 USD
View
B
Retailer 13
-
$788 AUD
$552 USD
View
Most Expensive
B
MOH London
LG839672512 · Oct 29
$1,153 AUD
£636 GBP
View
13 more retailers have this diamond
Prices start from $198 AUDSave up to $954 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
$198 AUD