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Round|Lab Grown|IGI

1.28ct E IF Round Lab Grown Diamond

ID • E/IF • IGI LG739546432

Shape and cutting style on the report: Round brilliant

Certificate IGI LG739546432

Diamond specifications and retailer prices

From $337 AUD
$237 USD
As of October 29, 2026
Save $2,025 AUD (86%) vs most expensive(unlock to see where)
22 retailers carry this diamond
Most expensive: $2,363 AUD at Brilliant Earth · As of October 29, 2026
View at Brilliant Earth

About this 1.28ct lab-grown round diamond

This 1.28ct lab-grown round sits in the one-and-a-quarter to one-and-a-half carat band, graded E colour (colourless) and IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG739546432 or 739546432. Listed at 22 retailers as of October 29, 2026, with prices from $337 to $2,363, a $2,025 spread on the same certified stone. Brilliant Earth lists it at $2,363. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.28
Carat
E
Colour
IF
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.2°
Pavilion angle40.8°
OriginLab Grown
Grading LabIGI
CertificateIGI LG739546432
Dimensions6.96 × 7.00 × 4.29 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
6.96 mm7.00 mm1.28 ctE / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG739546432
Side View
Table 58.0%Crown 35.2°Girdle: MediumPavilion 40.8°Culet: NoneDepth 61.5%

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: $2,363 AUD|Low: $219 AUD|High: $2,448 AUD|Avg: $1,061 AUD|-3.5%
Brilliant Earth
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
October 29, 2026
Retailer 9$337 AUD
Retailer 3$484 AUD
Retailer 7$586 AUD
Retailer 10$590 AUD
Retailer 2$624 AUD
Retailer 4$728 AUD
Retailer 11$838 AUD
Retailer 14$1,001 AUD
Retailer 13$1,109 AUD
Retailer 5$1,181 AUD
Retailer 8$1,616 AUD
Retailer 6$1,675 AUD
Retailer 12$1,701 AUD
Brilliant Earth$2,363 AUD

37 data points across 14 retailers

22 retailers$337 AUD to $2,363 AUD

Retailer 1
-
$278 AUD
$195 USD
Price last confirmed 37 days ago
Retailer 2
-
$278 AUD
$195 USD
View
Price last confirmed 19 days ago
Retailer 3
-
$322 AUD
$226 USD
View
Price last confirmed 37 days ago
A
Retailer 4
-
$337 AUD
$237 USD
View
Final sale: no returns
Retailer 5
-
$339 AUD
$238 USD
View
Price last confirmed 35 days ago
Retailer 6
-
$343 AUD
$241 USD
View
Price last confirmed 17 days ago
Retailer 7
-
$343 AUD
$241 USD
View
Price last confirmed 27 days ago
B+
Retailer 8
-
$484 AUD
$340 USD
View
A
Retailer 9
-
$586 AUD
€392 EUR
View
A
Retailer 10
-
$590 AUD
ZAR 6,697 ZAR
View
A
Retailer 11
-
$624 AUD
£345 GBP
View
A
Retailer 12
-
$728 AUD
$511 USD
View
A
Retailer 13
-
$838 AUD
View
A
Retailer 14
-
$1,001 AUD
$703 USD
View
Retailer 15
-
$1,105 AUD
$776 USD
View
Price last confirmed 30 days ago
Retailer 16
-
$1,105 AUD
$776 USD
View
Price last confirmed 33 days ago
A
Retailer 17
-
$1,109 AUD
$779 USD
View
B+
Retailer 18
-
$1,181 AUD
$830 USD
View
B+
Retailer 19
-
$1,616 AUD
£894 GBP
View
B+
Retailer 20
-
$1,675 AUD
$1,177 USD
View
Retailer 21
-
$1,701 AUD
$1,195 USD
View
Price last confirmed 11 days ago
Most Expensive
B
Brilliant Earth
16216592A · Oct 29
$2,363 AUD
$1,660 USD
View
21 more retailers have this diamond
Prices start from $337 AUDSave up to $2,025 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
1.28ct Round
$337 AUD