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Cushion|Lab Grown|IGI

4.25ct D FL Cushion Lab Grown Diamond

ID • D/FL • IGI LG780665477

Shape and cutting style on the report: Cushion modified brilliant

Certificate IGI LG780665477

Diamond specifications and retailer prices

From $5,676 AUD
$3,987 USD
As of October 30, 2026
Save $29,658 AUD (84%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: $35,334 AUD at Do Amore Diamonds · As of October 31, 2026
View at Do Amore Diamonds

About this 4.25ct lab-grown cushion diamond

This 4.25ct lab-grown cushion sits in the three to five carat band, graded D colour (colourless) and FL clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG780665477 or 780665477. Listed at 11 retailers as of October 30, 2026, with prices from $5,676 to $35,334, a $29,658 spread on the same certified stone. Do Amore Diamonds lists it at $35,334. Lab-grown prices in the 2ct and up range have fallen 40 to 60% over the last 18 months. Use the cross-retailer spread above to find the lowest current listing.

The 4Cs

4.25
Carat
D
Colour
FL
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.9°
Pavilion angle34.3°
OriginLab Grown
Grading LabIGI
CertificateIGI LG780665477
Dimensions10.79 × 8.51 × 5.67 mm
L/W Ratio1.27
Girdle conditionFaceted
Culet sizePointed
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
10.79 mm8.51 mm4.25 ctD / FL
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG780665477
Side View
Table 58.0%Crown 34.9°Girdle: THK-VTKPavilion 34.3°Culet: NoneDepth 66.6%

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: $35,334 AUD|Low: $5,676 AUD|High: $46,779 AUD|Avg: $15,854 AUD|-24.5%
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 4$5,676 AUD
Retailer 7$5,951 AUD
Retailer 6$6,684 AUD
Retailer 11$8,082 AUD
Retailer 10$9,606 AUD
Retailer 2$11,253 AUD
Retailer 3$12,118 AUD
Retailer 8$14,164 AUD
Retailer 9$16,343 AUD
Retailer 5$18,749 AUD
Do Amore Diamonds$35,334 AUD

29 data points across 11 retailers

11 retailers$5,676 AUD to $35,334 AUD

A
Cheapest Retailer
-
$5,676 AUD
$3,987 USD
A
Retailer 2
-
$5,951 AUD
$4,180 USD
View
A
Retailer 3
-
$6,684 AUD
$4,695 USD
View
A
Retailer 4
-
$8,082 AUD
$5,677 USD
View
Final sale: no returns
A
Retailer 5
-
$9,606 AUD
$6,748 USD
View
A
Retailer 6
-
$11,253 AUD
€7,528 EUR
View
Retailer 7
-
$12,118 AUD
$8,512 USD
View
Price last confirmed 83 days ago
B+
Retailer 8
-
$14,164 AUD
£7,834 GBP
View
B+
Retailer 9
-
$16,343 AUD
$11,480 USD
View
B+
Retailer 10
-
$18,749 AUD
$13,170 USD
View
Most Expensive
B
Do Amore Diamonds
27-6EADC235F · Oct 31
$35,334 AUD
$24,820 USD
View
10 more retailers have this diamond
Prices start from $5,676 AUDSave up to $29,658 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
4.25ct Cushion
$5,676 AUD