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Cushion|Lab Grown|IGI

3.50ct D SI1 Cushion Lab Grown Diamond

ID • D/SI1 • IGI LG852654640

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

Certificate IGI LG852654640

Diamond specifications and retailer prices

From $1,125 SGD
$880 USD
As of October 30, 2026
Save $1,604 SGD (59%) vs most expensive(unlock to see where)
4 retailers carry this diamond
Most expensive: $2,729 SGD at Taylor and Hart · As of October 31, 2026
View at Taylor and Hart

About this 3.5ct lab-grown cushion diamond

This 3.5ct lab-grown cushion sits in the three to five carat band, graded D colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG852654640 or 852654640. Listed at 4 retailers as of October 30, 2026, with prices from $1,125 to $2,729, a $1,604 spread on the same certified stone. Taylor and Hart lists it at $2,729. SI-grade stones are eye-clean roughly 60 to 70% of the time at this carat range. Check the inclusion plot on the cert and ask the retailer for high-resolution video before buying.

The 4Cs

3.50
Carat
D
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle43.2°
Pavilion angle41.7°
OriginLab Grown
Grading LabIGI
CertificateIGI LG852654640
Dimensions8.79 × 7.99 × 5.73 mm
L/W Ratio1.10
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
8.79 mm7.99 mm3.50 ctD / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG852654640
Side View
Table 74.0%Crown 43.2°Girdle: STK-THKPavilion 41.7°Culet: NoneDepth 71.7%

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: $2,224 SGD|Low: $1,125 SGD|High: $2,729 SGD|Avg: $1,873 SGD
Retailer 1
Retailer 2
Retailer 3
Taylor and Hart
October 31, 2026
Retailer 3$1,125 SGD
Retailer 2$1,303 SGD
Retailer 1$2,224 SGD
Taylor and Hart$2,729 SGD

2 data points across 4 retailers

4 retailers$1,125 SGD to $2,729 SGD

B+
Cheapest Retailer
-
$1,125 SGD
$880 USD
A
Retailer 2
-
$1,303 SGD
£803 GBP
View
B+
Retailer 3
-
$2,224 SGD
$1,740 USD
View
Most Expensive
B
Taylor and Hart
RY30UBB · Oct 31
$2,729 SGD
$2,135 USD
View
3 more retailers have this diamond
Prices start from $1,125 SGDSave up to $1,604 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
3.50ct Cushion
$1,125 SGD