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Cushion|Lab Grown|IGI

4.28ct D FL Cushion Lab Grown Diamond

EX • D/FL • IGI LG754594736

Shape and cutting style on the report: Cushion modified brilliant

Certificate IGI LG754594736

Diamond specifications and retailer prices

From $6,158 SGD
$4,817 USD
As of October 30, 2026
Save $28,306 SGD (82%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: $34,464 SGD at With Clarity · As of October 31, 2026
View at With Clarity

About this 4.28ct lab-grown cushion diamond

This 4.28ct 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 LG754594736 or 754594736. Listed at 14 retailers as of October 30, 2026, with prices from $6,158 to $34,464, a $28,306 spread on the same certified stone. With Clarity lists it at $34,464. 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

4.28
Carat
D
Colour
FL
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.4°
Pavilion angle37.1°
OriginLab Grown
Grading LabIGI
CertificateIGI LG754594736
Dimensions10.72 × 8.90 × 5.80 mm
L/W Ratio1.20
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
10.72 mm8.90 mm4.28 ctD / FL
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG754594736
Side View
Table 61.0%Crown 34.4°Girdle: STK-THKPavilion 37.1°Culet: NoneDepth 65.2%

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 30
Current: $10,645 SGD|Low: $6,158 SGD|High: $43,140 SGD|Avg: $16,917 SGD|-26.8%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
With Clarity
October 31, 2026
Retailer 7$6,158 SGD
Retailer 6$8,106 SGD
Retailer 2$8,149 SGD
Retailer 11$8,459 SGD
Retailer 1$10,645 SGD
Retailer 5$11,007 SGD
Retailer 8$12,205 SGD
Retailer 13$13,884 SGD
Retailer 3$14,482 SGD
Retailer 9$16,952 SGD
Retailer 4$18,778 SGD
Retailer 12$23,270 SGD
Retailer 10$23,600 SGD
With Clarity$34,464 SGD

35 data points across 14 retailers

14 retailers$6,158 SGD to $34,464 SGD

A
Cheapest Retailer
-
$6,158 SGD
$4,817 USD
A
Retailer 2
-
$8,106 SGD
$6,341 USD
View
A
Retailer 3
-
$8,149 SGD
HK$49,800 HKD
View
A
Retailer 4
-
$8,459 SGD
£5,210 GBP
View
A
Retailer 5
-
$10,645 SGD
€7,930 EUR
View
B+
Retailer 6
-
$11,007 SGD
$8,610 USD
View
B+
Retailer 7
-
$12,205 SGD
$9,547 USD
View
B+
Retailer 8
-
$13,884 SGD
ZAR 175,446 ZAR
View
B+
Retailer 9
-
$14,482 SGD
£8,920 GBP
View
B+
Retailer 10
-
$16,952 SGD
$13,260 USD
View
B+
Retailer 11
-
$18,778 SGD
$14,689 USD
View
B+
Retailer 12
-
$23,270 SGD
$18,203 USD
View
B+
Retailer 13
-
$23,600 SGD
View
Most Expensive
B
With Clarity
754594736 · Oct 31
$34,464 SGD
$26,959 USD
View
13 more retailers have this diamond
Prices start from $6,158 SGDSave up to $28,306 SGD

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
4.28ct Cushion
$6,158 SGD