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Round|Lab Grown|IGI

1.20ct E SI2 Round Lab Grown Diamond

EX • E/SI2 • IGI LG470147787

Shape and cutting style on the report: Round brilliant

Certificate IGI LG470147787

Diamond specifications and retailer prices

From $1,150 AUD
$808 USD
As of October 29, 2026
Save $1,001 AUD (47%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: $3,172 AUD at Friendly Diamonds · As of October 30, 2026
View at Friendly Diamonds

About this 1.2ct lab-grown round diamond

This 1.2ct lab-grown round sits in the classic one-carat band, graded E colour (colourless) and SI2 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG470147787 or 470147787. Listed at 11 retailers as of October 29, 2026, with a 87% 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

1.20
Carat
E
Colour
SI2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36.2°
Pavilion angle41.4°
OriginLab Grown
Grading LabIGI
CertificateIGI LG470147787
Dimensions6.78 × 6.72 × 4.26 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizePointed
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
6.78 mm6.72 mm1.20 ctE / SI2
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG470147787
Side View
Table 58.5%Crown 36.2°Girdle: MediumPavilion 41.4°Culet: NoneDepth 63.0%

Caratlytics Score

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B
Good
Decent quality, room for better deals
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 29
Current: $3,172 AUD|Low: $847 AUD|High: $5,066 AUD|Avg: $2,017 AUD
Friendly Diamonds
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
October 30, 2026
Retailer 3$847 AUD
Retailer 5$1,150 AUD
Retailer 9$1,251 AUD
Retailer 11$1,287 AUD
Retailer 6$1,295 AUD
Retailer 7$1,334 AUD
Retailer 2$2,040 AUD
Retailer 8$2,151 AUD
Friendly Diamonds$3,172 AUD
Retailer 10$3,750 AUD
Retailer 4$5,006 AUD

40 data points across 11 retailers

11 retailers$1,150 AUD to $2,151 AUD

B
Cheapest Retailer
-
$1,150 AUD
$808 USD
B
Retailer 2
-
$1,251 AUD
$879 USD
View
B
Retailer 3
-
$1,287 AUD
$904 USD
View
Final sale: no returns
B
Retailer 4
-
$1,295 AUD
$910 USD
View
Retailer 5
-
$1,334 AUD
$937 USD
View
Price last confirmed 19 days ago
B
Retailer 6
-
$1,334 AUD
$937 USD
View
B
Retailer 7
-
$2,040 AUD
£1,128 GBP
View
B
Retailer 8
-
$2,151 AUD
$1,511 USD
View
Most Expensive
Friendly Diamonds
1589058 · Oct 30
$3,172 AUD
$2,228 USD
View
Price under review
8 more retailers have this diamond
Prices start from $1,150 AUDSave up to $1,001 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.

B
1.20ct Round
$1,150 AUD