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Cushion|Lab Grown|IGI

1.28ct D IF Cushion Lab Grown Diamond

ID • D/IF • IGI LG843667683

Shape and cutting style on the report: Cushion modified brilliant

Certificate IGI LG843667683

Diamond specifications and retailer prices

From $592 AUD
£327 GBP
As of October 30, 2026
Save $3,124 AUD (84%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: $3,716 AUD at Do Amore Diamonds · As of October 31, 2026
View at Do Amore Diamonds

About this 1.28ct lab-grown cushion diamond

This 1.28ct lab-grown cushion sits in the one-and-a-quarter to one-and-a-half carat band, graded D colour (colourless) and IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG843667683 or 843667683. Listed at 11 retailers as of October 30, 2026, with prices from $592 to $3,716, a $3,124 spread on the same certified stone. Do Amore Diamonds lists it at $3,716. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.28
Carat
D
Colour
IF
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33.9°
Pavilion angle31.6°
OriginLab Grown
Grading LabIGI
CertificateIGI LG843667683
Dimensions8.53 × 5.37 × 3.53 mm
L/W Ratio1.59
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
8.53 mm5.37 mm1.28 ctD / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG843667683
Side View
Table 57.0%Crown 33.9°Girdle: MED-STKPavilion 31.6°Culet: NoneDepth 65.7%

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 30
Current: $3,716 AUD|Low: $518 AUD|High: $4,541 AUD|Avg: $1,883 AUD|-18.2%
Do Amore Diamonds
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
October 31, 2026
Retailer 6$592 AUD
Retailer 10$740 AUD
Retailer 11$850 AUD
Retailer 2$948 AUD
Retailer 3$978 AUD
Retailer 8$1,392 AUD
Retailer 9$2,185 AUD
Retailer 7$2,309 AUD
Retailer 4$2,535 AUD
Retailer 5$2,676 AUD
Do Amore Diamonds$3,716 AUD

17 data points across 11 retailers

11 retailers$592 AUD to $3,716 AUD

A
Cheapest Retailer
-
$592 AUD
£327 GBP
A
Retailer 2
-
$740 AUD
$520 USD
View
A
Retailer 3
-
$850 AUD
$597 USD
View
A
Retailer 4
-
$948 AUD
€634 EUR
View
A
Retailer 5
-
$978 AUD
$687 USD
View
A
Retailer 6
-
$1,392 AUD
View
B+
Retailer 7
-
$2,185 AUD
$1,535 USD
View
B+
Retailer 8
-
$2,309 AUD
£1,277 GBP
View
B
Retailer 9
-
$2,535 AUD
View
B+
Retailer 10
-
$2,676 AUD
$1,880 USD
View
Most Expensive
B
Do Amore Diamonds
27-5C60E91B3 · Oct 31
$3,716 AUD
$2,610 USD
View
10 more retailers have this diamond
Prices start from $592 AUDSave up to $3,124 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 Cushion
$592 AUD