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Round|Lab Grown|IGI

1.20ct I SI1 Round Lab Grown Diamond

ID • I/SI1 • IGI LG494167338

Shape and cutting style on the report: Round brilliant

Certificate IGI LG494167338

Diamond specifications and retailer prices

From $303 AUD
$213 USD
As of October 29, 2026
Save $2,601 AUD (90%) vs most expensive(unlock to see where)
17 retailers carry this diamond
Most expensive: $2,904 AUD at Do Amore Diamonds · As of October 31, 2026
View at Do Amore Diamonds

About this 1.2ct lab-grown round diamond

This 1.2ct 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 LG494167338 or 494167338. Listed at 17 retailers as of October 29, 2026, with prices from $303 to $2,904, a $2,601 spread on the same certified stone. Do Amore Diamonds lists it at $2,904. 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

1.20
Carat
I
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36°
Pavilion angle40.9°
OriginLab Grown
Grading LabIGI
CertificateIGI LG494167338
Dimensions6.78 × 6.81 × 4.21 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
6.78 mm6.81 mm1.20 ctI / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG494167338
Side View
Table 57.5%Crown 36°Girdle: MED-STKPavilion 40.9°Culet: NoneDepth 62.1%

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 29
Current: $2,904 AUD|Low: $302 AUD|High: $2,904 AUD|Avg: $1,012 AUD
Do Amore Diamonds
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
Retailer 15
Retailer 16
October 30, 2026
Retailer 14$303 AUD
Retailer 12$352 AUD
Retailer 3$376 AUD
Retailer 11$376 AUD
Retailer 2$441 AUD
Retailer 9$509 AUD
Retailer 15$706 AUD
Retailer 7$744 AUD
Retailer 13$827 AUD
Retailer 8$969 AUD
Retailer 5$1,210 AUD
Retailer 6$1,298 AUD
Retailer 4$1,331 AUD
Retailer 16$1,576 AUD
Retailer 10$1,669 AUD
Do Amore Diamonds$2,904 AUD

14 data points across 16 retailers

17 retailers$303 AUD to $2,904 AUD

A
Cheapest Retailer
-
$303 AUD
$213 USD
A
Retailer 2
-
$352 AUD
$247 USD
View
A
Retailer 3
-
$376 AUD
$264 USD
View
A
Retailer 4
-
$376 AUD
$264 USD
View
B+
Retailer 5
-
$441 AUD
$310 USD
View
A
Retailer 6
-
$509 AUD
£281 GBP
View
A
Retailer 7
-
$706 AUD
$496 USD
View
A
Retailer 8
-
$726 AUD
$510 USD
View
A
Retailer 9
-
$744 AUD
$523 USD
View
A
Retailer 10
-
$827 AUD
$581 USD
View
A
Retailer 11
-
$969 AUD
$680 USD
View
A
Retailer 12
-
$1,210 AUD
$850 USD
View
A
Retailer 13
-
$1,298 AUD
$912 USD
View
A
Retailer 14
-
$1,331 AUD
$935 USD
View
B+
Retailer 15
-
$1,576 AUD
$1,107 USD
View
A
Retailer 16
-
$1,669 AUD
£923 GBP
View
Most Expensive
B
Do Amore Diamonds
27-AE0814E47 · Oct 31
$2,904 AUD
$2,040 USD
View
16 more retailers have this diamond
Prices start from $303 AUDSave up to $2,601 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
1.20ct Round
$303 AUD