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Round|Lab Grown|IGI

1.03ct I SI1 Round Lab Grown Diamond

EX • I/SI1 • IGI LG451056228

Shape and cutting style on the report: Round brilliant

Certificate IGI LG451056228

Diamond specifications and retailer prices

From $854 AUD
$600 USD
As of October 31, 2026
Save $5,233 AUD (86%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: $6,087 AUD at MOH London · As of November 1, 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 I colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG451056228 or 451056228. Listed at 12 retailers as of October 31, 2026, with prices from $854 to $6,087, a $5,233 spread on the same certified stone. MOH London lists it at $6,087. 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
I
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.1°
Pavilion angle41.4°
OriginLab Grown
Grading LabIGI
CertificateIGI LG451056228
Dimensions6.44 × 6.41 × 4.08 mm
L/W Ratio1.00
Girdle conditionFaceted
Culet sizePointed
Cert comments
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Top View
6.44 mm6.41 mm1.03 ctI / SI1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG451056228
Side View
Table 55.5%Crown 34.1°Girdle: MED-STKPavilion 41.4°Culet: NoneDepth 63.4%

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 31
Current: $6,087 AUD|Low: $854 AUD|High: $6,171 AUD|Avg: $2,875 AUD
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
November 1, 2026
Retailer 6$854 AUD
Retailer 7$1,634 AUD
Retailer 11$1,829 AUD
Retailer 8$1,895 AUD
Retailer 10$1,895 AUD
Retailer 5$2,081 AUD
Retailer 12$2,143 AUD
Retailer 13$2,672 AUD
Retailer 9$3,011 AUD
Retailer 2$3,239 AUD
Retailer 3$3,734 AUD
Retailer 4$5,426 AUD
MOH London$6,087 AUD

26 data points across 13 retailers

12 retailers$854 AUD to $6,087 AUD

A
Cheapest Retailer
-
$854 AUD
$600 USD
B+
Retailer 2
-
$1,634 AUD
$1,148 USD
View
B+
Retailer 3
-
$1,777 AUD
$1,248 USD
View
B+
Retailer 4
-
$1,829 AUD
$1,285 USD
View
Final sale: no returns
Retailer 5
-
$1,895 AUD
$1,331 USD
View
Price last confirmed 20 days ago
B+
Retailer 6
-
$1,895 AUD
$1,331 USD
View
B
Retailer 7
-
$2,143 AUD
$1,505 USD
View
B
Retailer 8
-
$3,011 AUD
$2,115 USD
View
B
Retailer 9
-
$3,239 AUD
€2,167 EUR
View
B
Retailer 10
-
$3,552 AUD
$2,495 USD
View
B
Retailer 11
-
$3,734 AUD
$2,623 USD
View
Most Expensive
B
MOH London
LG451056228 · Nov 1
$6,087 AUD
£3,367 GBP
View
11 more retailers have this diamond
Prices start from $854 AUDSave up to $5,233 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
$854 AUD