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Oval|Lab Grown|IGI

1.28ct E IF Oval Lab Grown Diamond

GD • E/IF • IGI LG743547088

Shape and cutting style on the report: Oval brilliant

Certificate IGI LG743547088

Diamond specifications and retailer prices

From $309 AUD
$217 USD
As of October 29, 2026
Save $1,231 AUD (80%) vs most expensive(unlock to see where)
18 retailers carry this diamond
Most expensive: $2,107 AUD at Rare Carat · As of October 18, 2026
View at Rare Carat

About this 1.28ct lab-grown oval diamond

This 1.28ct lab-grown oval 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 standard cut grade and certified by IGI LG743547088 or 743547088. Listed at 18 retailers as of October 29, 2026, with a 399% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

1.28
Carat
E
Colour
IF
Clarity
Good
Cut

Specifications

CutGood
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.1°
Pavilion angle39.4°
OriginLab Grown
Grading LabIGI
CertificateIGI LG743547088
Dimensions8.54 × 6.12 × 3.83 mm
L/W Ratio1.40
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
8.54 mm6.12 mm1.28 ctE / IF
OriginLab Grown
CutGood
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG743547088
Side View
Table 57.0%Crown 35.1°Girdle: MED-STKPavilion 39.4°Culet: NoneDepth 62.6%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 29
Current: $2,107 AUD|Low: $296 AUD|High: $2,142 AUD|Avg: $863 AUD|-1.7%
Rare Carat
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
October 30, 2026
Retailer 14$309 AUD
Retailer 3$344 AUD
Retailer 5$357 AUD
Retailer 15$383 AUD
Retailer 2$405 AUD
Retailer 13$530 AUD
Retailer 10$657 AUD
Retailer 8$709 AUD
Retailer 6$732 AUD
Retailer 11$934 AUD
Retailer 4$1,228 AUD
Retailer 12$1,233 AUD
Retailer 7$1,497 AUD
Retailer 9$1,540 AUD
Rare Carat$2,107 AUD

44 data points across 15 retailers

18 retailers$309 AUD to $1,540 AUD

A
Cheapest Retailer
-
$309 AUD
$217 USD
A
Retailer 2
-
$344 AUD
$242 USD
View
Final sale: no returns
A
Retailer 3
-
$357 AUD
$251 USD
View
A
Retailer 4
-
$383 AUD
$269 USD
View
A
Retailer 5
-
$383 AUD
$269 USD
View
A
Retailer 6
-
$405 AUD
£224 GBP
View
B+
Retailer 7
-
$530 AUD
$372 USD
View
A
Retailer 8
-
$657 AUD
ZAR 7,454 ZAR
View
A
Retailer 9
-
$709 AUD
£392 GBP
View
B+
Retailer 10
-
$732 AUD
$514 USD
View
B+
Retailer 11
-
$934 AUD
View
B
Retailer 12
-
$1,217 AUD
$855 USD
View
B
Retailer 13
-
$1,228 AUD
$863 USD
View
B
Retailer 14
-
$1,233 AUD
$866 USD
View
B+
Retailer 15
-
$1,304 AUD
$916 USD
View
B
Retailer 16
-
$1,497 AUD
£828 GBP
View
B
Retailer 17
-
$1,540 AUD
£852 GBP
View
Most Expensive
Rare Carat
GD16362_l_743547088 · Oct 18
$2,107 AUD
$1,480 USD
View
Price last confirmed 11 days ago
17 more retailers have this diamond
Prices start from $309 AUDSave up to $1,231 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 Oval
$309 AUD