CaratHunter
Plans
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 $8,456 NZD
$4,766 USD
As of October 31, 2026
Save $52,101 NZD (86%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: $60,557 NZD 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 $8,456 to $60,557, a $52,101 spread on the same certified stone. Do Amore Diamonds lists it at $60,557. 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: $60,557 NZD|Low: $8,456 NZD|High: $65,489 NZD|Avg: $23,380 NZD|-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$8,456 NZD
Retailer 4$9,856 NZD
Retailer 7$10,209 NZD
Retailer 15$10,255 NZD
Retailer 9$11,233 NZD
Retailer 2$14,460 NZD
Retailer 17$14,728 NZD
Retailer 6$16,008 NZD
Retailer 11$17,630 NZD
Retailer 14$23,054 NZD
Retailer 13$23,984 NZD
Retailer 10$25,506 NZD
Retailer 18$28,100 NZD
Retailer 12$30,994 NZD
Retailer 8$35,443 NZD
Retailer 3$39,916 NZD
Retailer 5$52,947 NZD
Do Amore Diamonds$60,557 NZD

37 data points across 18 retailers

16 retailers$8,456 NZD to $60,557 NZD

A
Cheapest Retailer
-
$8,456 NZD
$4,766 USD
A
Retailer 2
-
$9,856 NZD
$5,555 USD
View
Final sale: no returns
Retailer 3
-
$10,209 NZD
$5,754 USD
View
Price last confirmed 15 days ago
A
Retailer 4
-
$10,255 NZD
$5,780 USD
View
A
Retailer 5
-
$14,460 NZD
£6,417 GBP
View
A
Retailer 6
-
$14,728 NZD
$8,301 USD
View
B+
Retailer 7
-
$16,008 NZD
£7,104 GBP
View
B+
Retailer 8
-
$17,630 NZD
€9,463 EUR
View
B+
Retailer 9
-
$23,054 NZD
£10,231 GBP
View
B+
Retailer 10
-
$23,984 NZD
ZAR 218,377 ZAR
View
B+
Retailer 11
-
$28,100 NZD
$15,837 USD
View
B+
Retailer 12
-
$30,994 NZD
$17,468 USD
View
B
Retailer 13
-
$35,443 NZD
$19,976 USD
View
B
Retailer 14
-
$39,916 NZD
$22,497 USD
View
B
Retailer 15
-
$52,947 NZD
$29,841 USD
View
Most Expensive
B
Do Amore Diamonds
27-81A9E32CB · Nov 1
$60,557 NZD
$34,130 USD
View
15 more retailers have this diamond
Prices start from $8,456 NZDSave up to $52,101 NZD

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
$8,456 NZD