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Cushion|Lab Grown|IGI

1.28ct D VVS1 Cushion Lab Grown Diamond

ID • D/VVS1 • IGI LG786634346

Shape and cutting style on the report: Antique cushion cut

Certificate IGI LG786634346

Diamond specifications and retailer prices

From $591 AUD
$414 USD
As of November 1, 2026
Save $2,526 AUD (81%) vs most expensive(unlock to see where)
18 retailers carry this diamond
Most expensive: $3,117 AUD at Queensmith · As of October 27, 2026
View at Queensmith

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 LG786634346 or 786634346. Listed at 18 retailers as of October 27, 2026, with prices from $591 to $3,117, a $2,526 spread on the same certified stone. Queensmith lists it at $3,117. 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 angle34.5°
Pavilion angle40.8°
OriginLab Grown
Grading LabIGI
CertificateIGI LG786634346
Dimensions7.01 × 6.41 × 3.88 mm
L/W Ratio1.09
Girdle conditionFaceted
Culet sizeLarge
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
7.01 mm6.41 mm1.28 ctD / VVS1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG786634346
Side View
Table 53.0%Crown 34.5°Girdle: MED-STKPavilion 40.8°Culet: LargeDepth 60.5%

Caratlytics Score

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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: $1,197 AUD|Low: $568 AUD|High: $2,725 AUD|Avg: $1,396 AUD|+1.9%
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
November 2, 2026
Retailer 11$591 AUD
Retailer 12$661 AUD
Retailer 5$662 AUD
Retailer 3$733 AUD
Retailer 14$733 AUD
Retailer 9$942 AUD
Retailer 13$985 AUD
Retailer 1$1,197 AUD
Retailer 8$1,787 AUD
Retailer 10$2,056 AUD
Retailer 6$2,131 AUD
Retailer 4$2,331 AUD
Retailer 2$2,357 AUD
Retailer 7$2,693 AUD

44 data points across 14 retailers

18 retailers$591 AUD to $3,117 AUD

A
Cheapest Retailer
-
$591 AUD
$414 USD
A
Retailer 2
-
$661 AUD
$463 USD
View
Final sale: no returns
A
Retailer 3
-
$662 AUD
$464 USD
View
A
Retailer 4
-
$733 AUD
$514 USD
View
Retailer 5
-
$733 AUD
$514 USD
View
Price last confirmed 8 days ago
B+
Retailer 6
-
$942 AUD
$660 USD
View
B+
Retailer 7
-
$985 AUD
$690 USD
View
B+
Retailer 8
-
$1,017 AUD
$713 USD
View
B+
Retailer 9
-
$1,197 AUD
£661 GBP
View
B
Retailer 10
-
$1,787 AUD
View
B
Retailer 11
-
$2,056 AUD
$1,441 USD
View
B
Retailer 12
-
$2,131 AUD
£1,176 GBP
View
B
Retailer 13
-
$2,331 AUD
SGD 2,208 SGD
View
B
Retailer 14
-
$2,357 AUD
$1,652 USD
View
B
Retailer 15
-
$2,406 AUD
$1,686 USD
View
B
Retailer 16
-
$2,680 AUD
$1,878 USD
View
B
Retailer 17
-
$2,693 AUD
£1,486 GBP
View
Most Expensive
B
Queensmith
LG786634346 · Oct 27
$3,117 AUD
£1,720 GBP
View
17 more retailers have this diamond
Prices start from $591 AUDSave up to $2,526 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
$591 AUD