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Cushion|Lab Grown|IGI

1.28ct D VVS1 Cushion Lab Grown Diamond

ID • D/VVS1 • IGI LG794641717

Shape and cutting style on the report: Square cushion modified brilliant

Certificate IGI LG794641717

Diamond specifications and retailer prices

From $419 AUD
$294 USD
As of November 1, 2026
Save $1,385 AUD (77%) vs most expensive(unlock to see where)
17 retailers carry this diamond
Most expensive: $2,264 AUD at Brilliant Earth · As of October 24, 2026
View at Brilliant Earth

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 VVS1 clarity (very-very-slightly-included), with a top-tier cut grade and certified by IGI LG794641717 or 794641717. Listed at 17 retailers as of November 1, 2026, with a 331% 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
D
Colour
VVS1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33.6°
Pavilion angle39.4°
OriginLab Grown
Grading LabIGI
CertificateIGI LG794641717
Dimensions6.35 × 6.31 × 4.12 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
6.35 mm6.31 mm1.28 ctD / VVS1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG794641717
Side View
Table 63.0%Crown 33.6°Girdle: MED-THKPavilion 39.4°Culet: NoneDepth 65.3%

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: Nov 1
Current: $449 AUD|Low: $350 AUD|High: $1,804 AUD|Avg: $935 AUD|-0.4%
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
Retailer 15
November 2, 2026
Retailer 7$389 AUD
Retailer 10$419 AUD
Retailer 1$449 AUD
Retailer 12$644 AUD
Retailer 15$671 AUD
Retailer 9$679 AUD
Retailer 8$733 AUD
Retailer 14$921 AUD
Retailer 6$949 AUD
Retailer 13$1,055 AUD
Retailer 4$1,340 AUD
Retailer 5$1,486 AUD
Retailer 3$1,540 AUD
Retailer 11$1,577 AUD
Retailer 2$1,804 AUD

26 data points across 15 retailers

17 retailers$419 AUD to $1,804 AUD

Retailer 1
-
$389 AUD
$273 USD
Price last confirmed 8 days ago
A
Retailer 2
-
$419 AUD
$294 USD
View
Final sale: no returns
A
Retailer 3
-
$449 AUD
£248 GBP
View
A
Retailer 4
-
$644 AUD
€431 EUR
View
A
Retailer 5
-
$671 AUD
$471 USD
View
A
Retailer 6
-
$679 AUD
ZAR 7,711 ZAR
View
A
Retailer 7
-
$733 AUD
£405 GBP
View
B+
Retailer 8
-
$921 AUD
$647 USD
View
A
Retailer 9
-
$949 AUD
View
B+
Retailer 10
-
$1,055 AUD
$741 USD
View
B+
Retailer 11
-
$1,340 AUD
$941 USD
View
B+
Retailer 12
-
$1,486 AUD
View
B
Retailer 13
-
$1,540 AUD
£852 GBP
View
B+
Retailer 14
-
$1,577 AUD
£872 GBP
View
Retailer 15
-
$1,740 AUD
$1,222 USD
View
Price last confirmed 112 days ago
B
Retailer 16
-
$1,804 AUD
$1,267 USD
View
Most Expensive
Brilliant Earth
19355098A · Oct 24
$2,264 AUD
$1,590 USD
View
Price last confirmed 8 days ago
16 more retailers have this diamond
Prices start from $419 AUDSave up to $1,385 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
$419 AUD