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Round|Lab Grown|IGI

1.28ct E IF Round Lab Grown Diamond

EX • E/IF • IGI LG817672940

Shape and cutting style on the report: Round brilliant

Certificate IGI LG817672940

Diamond specifications and retailer prices

From $297 AUD
$209 USD
As of October 29, 2026
Save $2,564 AUD (90%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: $2,861 AUD at Do Amore Diamonds · As of October 29, 2026
View at Do Amore 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 LG817672940 or 817672940. Listed at 16 retailers as of October 29, 2026, with prices from $297 to $2,861, a $2,564 spread on the same certified stone. Do Amore Diamonds lists it at $2,861. 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
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.9°
Pavilion angle41.3°
OriginLab Grown
Grading LabIGI
CertificateIGI LG817672940
Dimensions6.86 × 6.95 × 4.35 mm
L/W Ratio1.01
Girdle conditionFaceted
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
6.86 mm6.95 mm1.28 ctE / IF
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG817672940
Side View
Table 57.0%Crown 34.9°Girdle: MediumPavilion 41.3°Culet: NoneDepth 62.8%

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: $2,861 AUD|Low: $297 AUD|High: $2,861 AUD|Avg: $1,064 AUD
Do Amore Diamonds
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
Retailer 16
October 30, 2026
Retailer 15$297 AUD
Retailer 13$333 AUD
Retailer 14$346 AUD
Retailer 6$459 AUD
Retailer 7$514 AUD
Retailer 2$660 AUD
Retailer 9$676 AUD
Retailer 5$719 AUD
Retailer 12$995 AUD
Retailer 8$1,143 AUD
Retailer 16$1,191 AUD
Retailer 11$1,310 AUD
Retailer 3$1,636 AUD
Retailer 10$1,680 AUD
Retailer 4$2,306 AUD
Do Amore Diamonds$2,861 AUD

7 data points across 16 retailers

16 retailers$297 AUD to $2,861 AUD

A
Cheapest Retailer
-
$297 AUD
$209 USD
A
Retailer 2
-
$333 AUD
$234 USD
View
Final sale: no returns
A
Retailer 3
-
$346 AUD
$243 USD
View
A
Retailer 4
-
$459 AUD
$323 USD
View
B+
Retailer 5
-
$514 AUD
$361 USD
View
A
Retailer 6
-
$660 AUD
£365 GBP
View
A
Retailer 7
-
$676 AUD
€452 EUR
View
A
Retailer 8
-
$719 AUD
$505 USD
View
A
Retailer 9
-
$995 AUD
View
B+
Retailer 10
-
$1,143 AUD
$803 USD
View
B+
Retailer 11
-
$1,191 AUD
$837 USD
View
B+
Retailer 12
-
$1,310 AUD
$920 USD
View
B+
Retailer 13
-
$1,636 AUD
£905 GBP
View
B+
Retailer 14
-
$1,680 AUD
$1,180 USD
View
B
Retailer 15
-
$2,306 AUD
$1,620 USD
View
Most Expensive
B
Do Amore Diamonds
27-873C8725E · Oct 29
$2,861 AUD
$2,010 USD
View
15 more retailers have this diamond
Prices start from $297 AUDSave up to $2,564 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
$297 AUD