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Cushion|Lab Grown|IGI

1.51ct D IF Cushion Lab Grown Diamond

ID • D/IF • IGI LG669468191

Shape and cutting style on the report: Cushion brilliant

Certificate IGI LG669468191

Diamond specifications and retailer prices

From $1,026 AUD
As of November 4, 2026
Save $3,455 AUD (77%) vs most expensive(unlock to see where)
17 retailers carry this diamond
Most expensive: $6,272 AUD at Brilliant Earth · As of October 16, 2026
View at Brilliant Earth

About this 1.51ct lab-grown cushion diamond

This 1.51ct lab-grown cushion sits in the one-and-a-half to two carat band, graded D colour (colourless) and IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG669468191 or 669468191. Listed at 17 retailers as of November 3, 2026, with a 337% 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

1.51
Carat
D
Colour
IF
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryVery Good
FluorescenceNone
Crown angle32.4°
Pavilion angle40°
OriginLab Grown
Grading LabIGI
CertificateIGI LG669468191
Dimensions7.98 × 5.85 × 4.05 mm
L/W Ratio1.36
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
7.98 mm5.85 mm1.51 ctD / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateIGI LG669468191
Side View
Table 67.0%Crown 32.4°Girdle: THK-VTKPavilion 40°Culet: NoneDepth 69.2%

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: Nov 4
Current: $6,272 AUD|Low: $1,026 AUD|High: $6,272 AUD|Avg: $2,632 AUD
Brilliant Earth
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
November 5, 2026
Retailer 6$1,026 AUD
Retailer 16$1,063 AUD
Retailer 4$1,282 AUD
Retailer 9$1,319 AUD
Retailer 15$1,632 AUD
Retailer 2$1,682 AUD
Retailer 13$1,763 AUD
Retailer 11$1,954 AUD
Retailer 10$2,583 AUD
Retailer 5$3,301 AUD
Retailer 8$3,671 AUD
Retailer 3$3,686 AUD
Retailer 7$3,718 AUD
Retailer 14$3,906 AUD
Retailer 12$4,482 AUD
Brilliant Earth$6,272 AUD

45 data points across 16 retailers

17 retailers$1,026 AUD to $4,482 AUD

A
Cheapest Retailer
-
$1,026 AUD
Final sale: no returns
Retailer 2
-
$1,063 AUD
View
Price last confirmed 20 days ago
A
Retailer 3
-
$1,282 AUD
View
A
Retailer 4
-
$1,319 AUD
View
A
Retailer 5
-
$1,632 AUD
View
A
Retailer 6
-
$1,682 AUD
View
A
Retailer 7
-
$1,763 AUD
View
A
Retailer 8
-
$1,954 AUD
View
B+
Retailer 9
-
$2,583 AUD
View
B+
Retailer 10
-
$3,301 AUD
View
B
Retailer 11
-
$3,671 AUD
View
B+
Retailer 12
-
$3,686 AUD
View
B
Retailer 13
-
$3,718 AUD
View
Retailer 14
-
$3,906 AUD
View
Price last confirmed 17 days ago
B
Retailer 15
-
$4,057 AUD
View
B
Retailer 16
-
$4,482 AUD
View
Most Expensive
Brilliant Earth
14065763A · Oct 16
$6,272 AUD
$4,400 USD
View
Price last confirmed 20 days ago
16 more retailers have this diamond
Prices start from $1,026 AUDSave up to $3,455 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
1.51ct Cushion
$1,026 AUD