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Cushion|Lab Grown|IGI

4.30ct D FL Cushion Lab Grown Diamond

ID • D/FL • IGI LG780662187

Shape and cutting style on the report: Antique cushion cut

Certificate IGI LG780662187

Diamond specifications and retailer prices

From $6,336 USD
As of October 29, 2026
Save $14,410 USD (69%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: $20,746 USD at Frank Darling · As of October 29, 2026
View at Frank Darling

About this 4.3ct lab-grown cushion diamond

This 4.3ct 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 LG780662187 or 780662187. Listed at 10 retailers as of October 29, 2026, with prices from $6,336 to $20,746, a $14,410 spread on the same certified stone. Frank Darling lists it at $20,746. 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

4.30
Carat
D
Color
FL
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle37.2°
Pavilion angle40.7°
OriginLab Grown
Grading LabIGI
CertificateIGI LG780662187
Dimensions11.06 × 8.64 × 5.74 mm
L/W Ratio1.28
Girdle conditionFaceted
Culet sizeLarge
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
11.06 mm8.64 mm4.30 ctD / FL
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG780662187
Side View
Table 56.0%Crown 37.2°Girdle: STK-THKPavilion 40.7°Culet: LargeDepth 66.4%

Caratlytics Score

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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 29
Current: $20,746 USD|Low: $6,336 USD|High: $35,891 USD|Avg: $15,407 USD|-9.9%
Frank Darling
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
October 29, 2026
Retailer 15$6,336 USD
Retailer 9$6,440 USD
Retailer 13$6,697 USD
Retailer 3$7,134 USD
Retailer 10$8,662 USD
Retailer 11$8,732 USD
Retailer 14$9,050 USD
Retailer 2$9,272 USD
Retailer 12$9,789 USD
Retailer 6$12,346 USD
Retailer 8$16,276 USD
Frank Darling$20,746 USD
Retailer 4$23,280 USD
Retailer 7$30,112 USD
Retailer 5$35,891 USD

28 data points across 15 retailers

10 retailers$6,336 USD to $20,746 USD

A
Cheapest Retailer
-
$6,336 USD
Final sale: no returns
A
Retailer 2
-
$6,440 USD
View
A
Retailer 3
-
$6,697 USD
View
A
Retailer 4
-
$8,662 USD
View
A
Retailer 5
-
$8,732 USD
View
B+
Retailer 6
-
$9,050 USD
View
B+
Retailer 7
-
$9,272 USD
€8,830 EUR
View
B+
Retailer 8
-
$9,789 USD
View
B+
Retailer 9
-
$16,276 USD
£12,816 GBP
View
Most Expensive
B
Frank Darling
P82L-3EL · Oct 29
$20,746 USD
View
9 more retailers have this diamond
Prices start from $6,336 USDSave up to $14,410 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
4.30ct Cushion
$6,336 USD