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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 $6,090 AUD
£3,368 GBP
As of October 30, 2026
Save $33,073 AUD (84%) vs most expensive(unlock to see where)
21 retailers carry this diamond
Most expensive: $39,163 AUD 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 $6,090 to $39,163, a $33,073 spread on the same certified stone. Do Amore Diamonds lists it at $39,163. 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: $39,163 AUD|Low: $6,069 AUD|High: $39,163 AUD|Avg: $15,104 AUD
Do Amore Diamonds
Retailer 2
Retailer 3
Retailer 4
Retailer 5
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Retailer 7
Retailer 8
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Retailer 10
Retailer 11
Retailer 12
Retailer 13
Retailer 14
Retailer 15
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Retailer 17
Retailer 18
Retailer 19
October 31, 2026
Retailer 13$6,090 AUD
Retailer 17$6,282 AUD
Retailer 4$6,376 AUD
Retailer 18$6,568 AUD
Retailer 3$6,684 AUD
Retailer 9$7,290 AUD
Retailer 19$8,747 AUD
Retailer 14$9,454 AUD
Retailer 10$10,262 AUD
Retailer 8$11,278 AUD
Retailer 6$12,469 AUD
Retailer 2$13,601 AUD
Retailer 16$15,174 AUD
Retailer 15$15,514 AUD
Retailer 5$18,179 AUD
Retailer 12$18,663 AUD
Retailer 7$25,328 AUD
Retailer 11$26,008 AUD
Do Amore Diamonds$39,163 AUD

32 data points across 19 retailers

21 retailers$6,090 AUD to $39,163 AUD

A
Cheapest Retailer
-
$6,090 AUD
£3,368 GBP
A
Retailer 2
-
$6,282 AUD
$4,413 USD
View
A
Retailer 3
-
$6,376 AUD
$4,479 USD
View
Final sale: no returns
A
Retailer 4
-
$6,568 AUD
$4,614 USD
View
A
Retailer 5
-
$6,684 AUD
$4,695 USD
View
Retailer 6
-
$7,290 AUD
$5,121 USD
View
Price last confirmed 16 days ago
A
Retailer 7
-
$8,747 AUD
HK$48,000 HKD
View
A
Retailer 8
-
$9,454 AUD
£5,229 GBP
View
A
Retailer 9
-
$10,262 AUD
£5,676 GBP
View
Retailer 10
-
$11,278 AUD
$7,922 USD
View
Price last confirmed 9 days ago
A
Retailer 11
-
$12,469 AUD
$8,759 USD
View
A
Retailer 12
-
$12,800 AUD
$8,991 USD
View
B+
Retailer 13
-
$13,601 AUD
€9,099 EUR
View
B+
Retailer 14
-
$15,174 AUD
£8,393 GBP
View
B+
Retailer 15
-
$15,514 AUD
ZAR 176,054 ZAR
View
B+
Retailer 16
-
$18,179 AUD
$12,770 USD
View
B+
Retailer 17
-
$18,663 AUD
$13,110 USD
View
B
Retailer 18
-
$25,328 AUD
SGD 24,043 SGD
View
B
Retailer 19
-
$26,008 AUD
$18,269 USD
View
Retailer 20
-
$31,632 AUD
$22,220 USD
View
Price last confirmed 7 days ago
Most Expensive
B
Do Amore Diamonds
27-E50AB4534 · Oct 31
$39,163 AUD
$27,510 USD
View
20 more retailers have this diamond
Prices start from $6,090 AUDSave up to $33,073 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
4.23ct Cushion
$6,090 AUD