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Round|Lab Grown|IGI

1.28ct E IF Round Lab Grown Diamond

ID • E/IF • IGI LG713511172

Shape and cutting style on the report: Round brilliant

Certificate IGI LG713511172

Diamond specifications and retailer prices

From $278 AUD
$195 USD
As of October 29, 2026
Save $904 AUD (76%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: $1,616 AUD at MOH London · As of October 21, 2026
View at MOH London

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 LG713511172 or 713511172. Listed at 16 retailers as of October 29, 2026, with a 326% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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 angle40.4°
OriginLab Grown
Grading LabIGI
CertificateIGI LG713511172
Dimensions6.95 × 6.99 × 4.27 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
6.95 mm6.99 mm1.28 ctE / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG713511172
Side View
Table 57.0%Crown 35.2°Girdle: MediumPavilion 40.4°Culet: NoneDepth 61.3%

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: $1,616 AUD|Low: $266 AUD|High: $1,625 AUD|Avg: $659 AUD|+0.6%
MOH London
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 29, 2026
Retailer 12$278 AUD
Retailer 15$309 AUD
Retailer 4$322 AUD
Retailer 7$343 AUD
Retailer 14$343 AUD
Retailer 13$477 AUD
Retailer 8$558 AUD
Retailer 9$590 AUD
Retailer 2$624 AUD
Retailer 3$697 AUD
Retailer 10$838 AUD
Retailer 6$1,001 AUD
Retailer 5$1,105 AUD
Retailer 11$1,109 AUD
MOH London$1,616 AUD

45 data points across 15 retailers

16 retailers$278 AUD to $1,181 AUD

A
Cheapest Retailer
-
$278 AUD
$195 USD
A
Retailer 2
-
$309 AUD
$217 USD
View
Final sale: no returns
A
Retailer 3
-
$322 AUD
$226 USD
View
A
Retailer 4
-
$343 AUD
$241 USD
View
A
Retailer 5
-
$343 AUD
$241 USD
View
B+
Retailer 6
-
$477 AUD
$335 USD
View
A
Retailer 7
-
$558 AUD
£309 GBP
View
A
Retailer 8
-
$590 AUD
ZAR 6,697 ZAR
View
A
Retailer 9
-
$624 AUD
£345 GBP
View
A
Retailer 10
-
$697 AUD
$490 USD
View
A
Retailer 11
-
$838 AUD
View
A
Retailer 12
-
$1,001 AUD
$703 USD
View
A
Retailer 13
-
$1,105 AUD
$776 USD
View
B+
Retailer 14
-
$1,109 AUD
$779 USD
View
B+
Retailer 15
-
$1,181 AUD
$830 USD
View
Most Expensive
MOH London
LG713511172 · Oct 21
$1,616 AUD
£894 GBP
View
Price last confirmed 8 days ago
15 more retailers have this diamond
Prices start from $278 AUDSave up to $904 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
$278 AUD