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Round|Lab Grown|IGI

1.28ct E IF Round Lab Grown Diamond

ID • E/IF • IGI LG588375105

Shape and cutting style on the report: Round brilliant

Certificate IGI LG588375105

Diamond specifications and retailer prices

From $344 AUD
$242 USD
As of October 29, 2026
Save $1,547 AUD (82%) vs most expensive(unlock to see where)
18 retailers carry this diamond
Most expensive: $1,892 AUD at Reve Diamonds · As of October 30, 2026
View at Reve Diamonds

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 LG588375105 or 588375105. Listed at 18 retailers as of October 29, 2026, with prices from $344 to $1,892, a $1,547 spread on the same certified stone. Reve Diamonds lists it at $1,892. 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 angle34°
Pavilion angle41°
OriginLab Grown
Grading LabIGI
CertificateIGI LG588375105
Dimensions7.03 × 6.99 × 4.25 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
7.03 mm6.99 mm1.28 ctE / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG588375105
Side View
Table 59.0%Crown 34°Girdle: MediumPavilion 41°Culet: NoneDepth 60.6%

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: $693 AUD|Low: $344 AUD|High: $1,735 AUD|Avg: $763 AUD|+0.2%
Retailer 1
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 30, 2026
Retailer 8$344 AUD
Retailer 6$384 AUD
Retailer 13$400 AUD
Retailer 10$428 AUD
Retailer 14$428 AUD
Retailer 1$693 AUD
Retailer 4$720 AUD
Retailer 2$723 AUD
Retailer 5$771 AUD
Retailer 7$809 AUD
Retailer 11$1,051 AUD
Retailer 12$1,375 AUD
Retailer 3$1,381 AUD
Retailer 9$1,725 AUD

39 data points across 14 retailers

18 retailers$344 AUD to $1,892 AUD

A
Cheapest Retailer
-
$344 AUD
$242 USD
A
Retailer 2
-
$384 AUD
$270 USD
View
Final sale: no returns
A
Retailer 3
-
$400 AUD
$281 USD
View
A
Retailer 4
-
$428 AUD
$301 USD
View
A
Retailer 5
-
$428 AUD
$301 USD
View
A
Retailer 6
-
$693 AUD
£383 GBP
View
A
Retailer 7
-
$720 AUD
$506 USD
View
A
Retailer 8
-
$723 AUD
ZAR 8,211 ZAR
View
A
Retailer 9
-
$771 AUD
$542 USD
View
A
Retailer 10
-
$771 AUD
$542 USD
View
A
Retailer 11
-
$809 AUD
£448 GBP
View
A
Retailer 12
-
$1,025 AUD
$720 USD
View
A
Retailer 13
-
$1,051 AUD
View
B+
Retailer 14
-
$1,375 AUD
$966 USD
View
B+
Retailer 15
-
$1,381 AUD
$970 USD
View
B+
Retailer 16
-
$1,449 AUD
$1,018 USD
View
B+
Retailer 17
-
$1,725 AUD
£954 GBP
View
Most Expensive
B+
Reve Diamonds
E25E1660C · Oct 30
$1,892 AUD
$1,329 USD
View
17 more retailers have this diamond
Prices start from $344 AUDSave up to $1,547 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
$344 AUD