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Cushion|Lab Grown|IGI

4.28ct D FL Cushion Lab Grown Diamond

ID • D/FL • IGI LG780662034

Shape and cutting style on the report: Square cushion modified brilliant

Certificate IGI LG780662034

Diamond specifications and retailer prices

From $5,130 SGD
$4,013 USD
As of October 30, 2026
Save $26,817 SGD (84%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: $31,947 SGD at Do Amore Diamonds · As of October 31, 2026
View at Do Amore Diamonds

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 LG780662034 or 780662034. Listed at 11 retailers as of October 30, 2026, with prices from $5,130 to $31,947, a $26,817 spread on the same certified stone. Do Amore Diamonds lists it at $31,947. 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 angle35.4°
Pavilion angle38.4°
OriginLab Grown
Grading LabIGI
CertificateIGI LG780662034
Dimensions9.70 × 9.39 × 6.28 mm
L/W Ratio1.03
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
9.70 mm9.39 mm4.28 ctD / FL
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG780662034
Side View
Table 57.0%Crown 35.4°Girdle: STK-THKPavilion 38.4°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: $31,947 SGD|Low: $5,130 SGD|High: $42,302 SGD|Avg: $14,454 SGD|-24.5%
Do Amore Diamonds
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
October 31, 2026
Retailer 4$5,130 SGD
Retailer 7$5,382 SGD
Retailer 6$6,079 SGD
Retailer 11$7,305 SGD
Retailer 10$8,687 SGD
Retailer 2$10,176 SGD
Retailer 3$10,931 SGD
Retailer 8$12,803 SGD
Retailer 9$14,777 SGD
Retailer 5$16,952 SGD
Do Amore Diamonds$31,947 SGD

29 data points across 11 retailers

11 retailers$5,130 SGD to $31,947 SGD

A
Cheapest Retailer
-
$5,130 SGD
$4,013 USD
A
Retailer 2
-
$5,382 SGD
$4,210 USD
View
A
Retailer 3
-
$6,079 SGD
$4,755 USD
View
A
Retailer 4
-
$7,305 SGD
$5,714 USD
View
Final sale: no returns
A
Retailer 5
-
$8,687 SGD
$6,795 USD
View
A
Retailer 6
-
$10,176 SGD
€7,581 EUR
View
Retailer 7
-
$10,931 SGD
$8,550 USD
View
Price last confirmed 83 days ago
B+
Retailer 8
-
$12,803 SGD
£7,886 GBP
View
B+
Retailer 9
-
$14,777 SGD
$11,559 USD
View
B+
Retailer 10
-
$16,952 SGD
$13,260 USD
View
Most Expensive
B
Do Amore Diamonds
27-5A8A2550F · Oct 31
$31,947 SGD
$24,990 USD
View
10 more retailers have this diamond
Prices start from $5,130 SGDSave up to $26,817 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
$5,130 SGD