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Round|Lab Grown|IGI

3.00ct J SI1 Round Lab Grown Diamond

EX • J/SI1 • IGI LG485136506

Shape and cutting style on the report: Round brilliant

Certificate IGI LG485136506

Diamond specifications and retailer prices

From $2,400 AUD
As of November 5, 2026
Save $11,205 AUD (82%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: $18,019 AUD at MOH London · As of October 29, 2026
View at MOH London

About this 3ct lab-grown round diamond

This 3ct lab-grown round sits in the three to five carat band, graded J colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG485136506 or 485136506. Listed at 12 retailers as of November 4, 2026, with a 467% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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

3.00
Carat
J
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle32.8°
Pavilion angle40.1°
OriginLab Grown
Grading LabIGI
CertificateIGI LG485136506
Dimensions9.41 × 9.38 × 5.45 mm
L/W Ratio1.00
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process and may include post-growth treatment Type IIa
Top View
9.41 mm9.38 mm3.00 ctJ / SI1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG485136506
Side View
Table 63.0%Crown 32.8°Girdle: MED-STKPavilion 40.1°Culet: NoneDepth 58.0%

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: Nov 5
Current: $18,019 AUD|Low: $2,400 AUD|High: $18,162 AUD|Avg: $9,682 AUD|+0.5%
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 5, 2026
Retailer 6$2,400 AUD
Retailer 8$7,592 AUD
Retailer 12$7,957 AUD
Retailer 11$8,504 AUD
Retailer 3$8,808 AUD
Retailer 9$8,808 AUD
Retailer 4$8,828 AUD
Retailer 2$8,852 AUD
Retailer 5$9,425 AUD
Retailer 13$10,455 AUD
Retailer 7$10,847 AUD
Retailer 10$13,605 AUD
MOH London$18,019 AUD

40 data points across 13 retailers

12 retailers$2,400 AUD to $13,605 AUD

A
Cheapest Retailer
-
$2,400 AUD
B+
Retailer 2
-
$7,592 AUD
View
B+
Retailer 3
-
$7,957 AUD
View
B+
Retailer 4
-
$8,504 AUD
View
Final sale: no returns
B+
Retailer 5
-
$8,808 AUD
View
Retailer 6
-
$8,808 AUD
View
Price last confirmed 25 days ago
B+
Retailer 7
-
$8,828 AUD
View
B+
Retailer 8
-
$8,852 AUD
View
B
Retailer 9
-
$10,455 AUD
View
B
Retailer 10
-
$10,847 AUD
View
B
Retailer 11
-
$13,605 AUD
View
Most Expensive
MOH London
LG485136506 · Oct 29
$18,019 AUD
£9,932 GBP
View
Price last confirmed 7 days ago
11 more retailers have this diamond
Prices start from $2,400 AUDSave up to $11,205 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
3.00ct Round
$2,400 AUD