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Cushion|Lab Grown|IGI

4.23ct D FL Cushion Lab Grown Diamond

EX • D/FL • IGI LG789612851

Shape and cutting style on the report: Cushion modified brilliant

Certificate IGI LG789612851

Diamond specifications and retailer prices

From $7,590 NZD
£3,368 GBP
As of October 30, 2026
Save $41,221 NZD (84%) vs most expensive(unlock to see where)
21 retailers carry this diamond
Most expensive: $48,811 NZD at Do Amore Diamonds · As of October 31, 2026
View at Do Amore Diamonds

About this 4.23ct lab-grown cushion diamond

This 4.23ct 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 LG789612851 or 789612851. Listed at 21 retailers as of October 30, 2026, with prices from $7,590 to $48,811, a $41,221 spread on the same certified stone. Do Amore Diamonds lists it at $48,811. 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

4.23
Carat
D
Colour
FL
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle32.2°
Pavilion angle37.4°
OriginLab Grown
Grading LabIGI
CertificateIGI LG789612851
Dimensions10.95 × 8.81 × 5.89 mm
L/W Ratio1.24
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
10.95 mm8.81 mm4.23 ctD / FL
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG789612851
Side View
Table 59.0%Crown 32.2°Girdle: MED-STKPavilion 37.4°Culet: NoneDepth 66.9%

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 30
Current: $48,811 NZD|Low: $7,564 NZD|High: $48,811 NZD|Avg: $18,825 NZD
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
Retailer 19
October 31, 2026
Retailer 13$7,590 NZD
Retailer 17$7,830 NZD
Retailer 4$7,947 NZD
Retailer 18$8,187 NZD
Retailer 3$8,330 NZD
Retailer 9$9,086 NZD
Retailer 19$10,901 NZD
Retailer 14$11,782 NZD
Retailer 10$12,790 NZD
Retailer 8$14,056 NZD
Retailer 6$15,541 NZD
Retailer 2$16,952 NZD
Retailer 16$18,912 NZD
Retailer 15$19,336 NZD
Retailer 5$22,658 NZD
Retailer 12$23,261 NZD
Retailer 7$31,568 NZD
Retailer 11$32,415 NZD
Do Amore Diamonds$48,811 NZD

32 data points across 19 retailers

21 retailers$7,590 NZD to $48,811 NZD

A
Cheapest Retailer
-
$7,590 NZD
£3,368 GBP
A
Retailer 2
-
$7,830 NZD
$4,413 USD
View
A
Retailer 3
-
$7,947 NZD
$4,479 USD
View
Final sale: no returns
A
Retailer 4
-
$8,187 NZD
$4,614 USD
View
A
Retailer 5
-
$8,330 NZD
$4,695 USD
View
Retailer 6
-
$9,086 NZD
$5,121 USD
View
Price last confirmed 15 days ago
A
Retailer 7
-
$10,901 NZD
HK$48,000 HKD
View
A
Retailer 8
-
$11,782 NZD
£5,229 GBP
View
A
Retailer 9
-
$12,790 NZD
£5,676 GBP
View
Retailer 10
-
$14,056 NZD
$7,922 USD
View
Price last confirmed 8 days ago
A
Retailer 11
-
$15,541 NZD
$8,759 USD
View
A
Retailer 12
-
$15,953 NZD
$8,991 USD
View
B+
Retailer 13
-
$16,952 NZD
€9,099 EUR
View
B+
Retailer 14
-
$18,912 NZD
£8,393 GBP
View
B+
Retailer 15
-
$19,336 NZD
ZAR 176,054 ZAR
View
B+
Retailer 16
-
$22,658 NZD
$12,770 USD
View
B+
Retailer 17
-
$23,261 NZD
$13,110 USD
View
B
Retailer 18
-
$31,568 NZD
SGD 24,043 SGD
View
B
Retailer 19
-
$32,415 NZD
$18,269 USD
View
Retailer 20
-
$39,425 NZD
$22,220 USD
View
Price last confirmed 7 days ago
Most Expensive
B
Do Amore Diamonds
27-E50AB4534 · Oct 31
$48,811 NZD
$27,510 USD
View
20 more retailers have this diamond
Prices start from $7,590 NZDSave up to $41,221 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
4.23ct Cushion
$7,590 NZD