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Cushion|Lab Grown|IGI

4.20ct D FL Cushion Lab Grown Diamond

EX • D/FL • IGI LG803623561

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

Certificate IGI LG803623561

Diamond specifications and retailer prices

From $6,785 AUD
$4,766 USD
As of October 31, 2026
Save $41,803 AUD (86%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: $48,587 AUD at Do Amore Diamonds · As of November 1, 2026
View at Do Amore Diamonds

About this 4.2ct lab-grown cushion diamond

This 4.2ct 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 LG803623561 or 803623561. Listed at 16 retailers as of October 31, 2026, with prices from $6,785 to $48,587, a $41,803 spread on the same certified stone. Do Amore Diamonds lists it at $48,587. 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

4.20
Carat
D
Colour
FL
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36°
Pavilion angle39.6°
OriginLab Grown
Grading LabIGI
CertificateIGI LG803623561
Dimensions9.40 × 9.21 × 6.25 mm
L/W Ratio1.02
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
9.40 mm9.21 mm4.20 ctD / FL
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG803623561
Side View
Table 61.0%Crown 36°Girdle: MED-STKPavilion 39.6°Culet: NoneDepth 67.9%

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 31
Current: $48,587 AUD|Low: $6,785 AUD|High: $52,545 AUD|Avg: $18,782 AUD|-7.5%
Do Amore Diamonds
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
Retailer 17
Retailer 18
November 1, 2026
Retailer 16$6,785 AUD
Retailer 4$7,908 AUD
Retailer 7$8,191 AUD
Retailer 15$8,228 AUD
Retailer 9$9,013 AUD
Retailer 11$11,602 AUD
Retailer 17$11,817 AUD
Retailer 6$12,844 AUD
Retailer 12$14,145 AUD
Retailer 2$18,398 AUD
Retailer 14$19,244 AUD
Retailer 10$20,464 AUD
Retailer 18$22,546 AUD
Retailer 13$24,868 AUD
Retailer 8$28,438 AUD
Retailer 3$32,027 AUD
Retailer 5$42,482 AUD
Do Amore Diamonds$48,587 AUD

36 data points across 18 retailers

16 retailers$6,785 AUD to $48,587 AUD

A
Cheapest Retailer
-
$6,785 AUD
$4,766 USD
A
Retailer 2
-
$7,908 AUD
$5,555 USD
View
Final sale: no returns
Retailer 3
-
$8,191 AUD
$5,754 USD
View
Price last confirmed 16 days ago
A
Retailer 4
-
$8,228 AUD
$5,780 USD
View
A
Retailer 5
-
$11,602 AUD
£6,417 GBP
View
A
Retailer 6
-
$11,817 AUD
$8,301 USD
View
B+
Retailer 7
-
$12,844 AUD
£7,104 GBP
View
B+
Retailer 8
-
$14,145 AUD
€9,463 EUR
View
B+
Retailer 9
-
$18,398 AUD
£10,176 GBP
View
B+
Retailer 10
-
$19,244 AUD
ZAR 218,377 ZAR
View
B+
Retailer 11
-
$22,546 AUD
$15,837 USD
View
B+
Retailer 12
-
$24,868 AUD
$17,468 USD
View
B
Retailer 13
-
$28,438 AUD
$19,976 USD
View
B
Retailer 14
-
$32,027 AUD
$22,497 USD
View
B
Retailer 15
-
$42,482 AUD
$29,841 USD
View
Most Expensive
B
Do Amore Diamonds
27-81A9E32CB · Nov 1
$48,587 AUD
$34,130 USD
View
15 more retailers have this diamond
Prices start from $6,785 AUDSave up to $41,803 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
4.20ct Cushion
$6,785 AUD