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Cushion|Lab Grown|IGI

4.28ct D FL Cushion Lab Grown Diamond

ID • D/FL • IGI LG762545820

Shape and cutting style on the report: Cushion modified brilliant

Certificate IGI LG762545820

Diamond specifications and retailer prices

From $5,626 SGD
$4,401 USD
As of October 30, 2026
Save $19,567 SGD (78%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: $25,193 SGD at Blue Nile · As of October 31, 2026
View at Blue Nile

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 LG762545820 or 762545820. Listed at 14 retailers as of October 30, 2026, with prices from $5,626 to $25,193, a $19,567 spread on the same certified stone. Blue Nile lists it at $25,193. 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
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33.2°
Pavilion angle35.3°
OriginLab Grown
Grading LabIGI
CertificateIGI LG762545820
Dimensions10.79 × 8.75 × 5.75 mm
L/W Ratio1.23
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
10.79 mm8.75 mm4.28 ctD / FL
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG762545820
Side View
Table 58.0%Crown 33.2°Girdle: MED-THKPavilion 35.3°Culet: NoneDepth 65.7%

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: $25,193 SGD|Low: $5,626 SGD|High: $28,738 SGD|Avg: $14,306 SGD|+48.2%
Blue Nile
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
October 31, 2026
Retailer 8$5,626 SGD
Retailer 7$6,010 SGD
Retailer 14$8,247 SGD
Retailer 11$8,459 SGD
Retailer 5$10,438 SGD
Retailer 2$10,645 SGD
Retailer 6$11,007 SGD
Retailer 9$11,158 SGD
Retailer 13$13,884 SGD
Retailer 3$14,482 SGD
Retailer 10$16,952 SGD
Retailer 4$18,778 SGD
Retailer 12$23,270 SGD
Blue Nile$25,193 SGD

37 data points across 14 retailers

14 retailers$5,626 SGD to $25,193 SGD

A
Cheapest Retailer
-
$5,626 SGD
$4,401 USD
A
Retailer 2
-
$6,010 SGD
$4,701 USD
View
A
Retailer 3
-
$8,247 SGD
HK$50,400 HKD
View
A
Retailer 4
-
$8,459 SGD
£5,210 GBP
View
Retailer 5
-
$10,438 SGD
$8,165 USD
View
Price last confirmed 13 days ago
A
Retailer 6
-
$10,645 SGD
€7,930 EUR
View
A
Retailer 7
-
$11,007 SGD
$8,610 USD
View
A
Retailer 8
-
$11,158 SGD
$8,728 USD
View
B+
Retailer 9
-
$13,884 SGD
ZAR 175,446 ZAR
View
B+
Retailer 10
-
$14,482 SGD
£8,920 GBP
View
B+
Retailer 11
-
$16,952 SGD
$13,260 USD
View
B+
Retailer 12
-
$18,778 SGD
$14,689 USD
View
B
Retailer 13
-
$23,270 SGD
$18,203 USD
View
Most Expensive
B
Blue Nile
29977365 · Oct 31
$25,193 SGD
$19,707 USD
View
13 more retailers have this diamond
Prices start from $5,626 SGDSave up to $19,567 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
$5,626 SGD