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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 $4,278 USD
£3,368 GBP
As of October 30, 2026
Save $23,232 USD (84%) vs most expensive(unlock to see where)
21 retailers carry this diamond
Most expensive: $27,510 USD at Do Amore Diamonds · As of October 29, 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 29, 2026, with prices from $4,278 to $27,510, a $23,232 spread on the same certified stone. Do Amore Diamonds lists it at $27,510. 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
Color
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
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 30
Current: $27,510 USD|Low: $4,263 USD|High: $27,510 USD|Avg: $10,665 USD
Do Amore Diamonds
Retailer 2
Retailer 3
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Retailer 5
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Retailer 11
Retailer 12
Retailer 13
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Retailer 19
October 30, 2026
Retailer 2$4,278 USD
Retailer 16$4,413 USD
Retailer 3$4,479 USD
Retailer 17$4,614 USD
Retailer 19$4,695 USD
Retailer 8$5,121 USD
Retailer 18$6,144 USD
Retailer 12$6,641 USD
Retailer 9$7,209 USD
Retailer 7$7,922 USD
Retailer 5$8,759 USD
Retailer 14$9,621 USD
Retailer 15$10,659 USD
Retailer 13$10,898 USD
Retailer 4$12,770 USD
Retailer 6$17,792 USD
Retailer 10$18,269 USD
Retailer 11$22,220 USD
Do Amore Diamonds$27,510 USD

33 data points across 19 retailers

21 retailers$4,278 USD to $27,510 USD

A
Cheapest Retailer
-
$4,278 USD
£3,368 GBP
A
Retailer 2
-
$4,413 USD
View
A
Retailer 3
-
$4,479 USD
View
Final sale: no returns
A
Retailer 4
-
$4,614 USD
View
A
Retailer 5
-
$4,695 USD
View
Retailer 6
-
$5,121 USD
View
Price last confirmed 14 days ago
A
Retailer 7
-
$6,144 USD
HK$48,000 HKD
View
A
Retailer 8
-
$6,641 USD
£5,229 GBP
View
A
Retailer 9
-
$7,209 USD
£5,676 GBP
View
Retailer 10
-
$7,922 USD
View
Price last confirmed 7 days ago
A
Retailer 11
-
$8,759 USD
View
A
Retailer 12
-
$8,991 USD
View
B+
Retailer 13
-
$9,621 USD
€9,163 EUR
View
B+
Retailer 14
-
$10,659 USD
£8,393 GBP
View
B+
Retailer 15
-
$10,898 USD
ZAR 176,054 ZAR
View
B+
Retailer 16
-
$12,770 USD
View
B
Retailer 17
-
$17,792 USD
SGD 24,043 SGD
View
B
Retailer 18
-
$18,269 USD
View
B
Retailer 19
-
$22,220 USD
View
B
Retailer 20
-
$22,220 USD
View
Most Expensive
B
Do Amore Diamonds
27-E50AB4534 · Oct 29
$27,510 USD
View
20 more retailers have this diamond
Prices start from $4,278 USDSave up to $23,232 USD

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
$4,278 USD