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Cushion|Lab Grown|IGI

1.39ct D SI1 Cushion Lab Grown Diamond

VG • D/SI1 • IGI LG494172710

Shape and cutting style on the report: Cushion brilliant

Certificate IGI LG494172710

Diamond specifications and retailer prices

From $835 SGD
$653 USD
As of October 30, 2026
Save $1,776 SGD (68%) vs most expensive(unlock to see where)
6 retailers carry this diamond
Most expensive: $2,611 SGD at MOH London · As of October 26, 2026
View at MOH London

About this 1.39ct lab-grown cushion diamond

This 1.39ct lab-grown cushion sits in the one-and-a-quarter to one-and-a-half carat band, graded D colour (colourless) and SI1 clarity (slightly-included), with a very-good cut grade and certified by IGI LG494172710 or 494172710. Listed at 6 retailers as of October 26, 2026, with prices from $835 to $2,611, a $1,776 spread on the same certified stone. MOH London lists it at $2,611. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

1.39
Carat
D
Colour
SI1
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36.5°
Pavilion angle36°
OriginLab Grown
Grading LabIGI
CertificateIGI LG494172710
Dimensions6.89 × 5.82 × 4.07 mm
L/W Ratio1.18
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
6.89 mm5.82 mm1.39 ctD / SI1
OriginLab Grown
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG494172710
Side View
Table 60.5%Crown 36.5°Girdle: MED-VTKPavilion 36°Culet: NoneDepth 69.9%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 30
Current: $2,611 SGD|Low: $835 SGD|High: $2,638 SGD|Avg: $1,415 SGD|+0.1%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
November 1, 2026
Retailer 6$835 SGD
Retailer 3$1,079 SGD
Retailer 5$1,113 SGD
Retailer 2$1,164 SGD
Retailer 4$1,291 SGD
Retailer 7$1,901 SGD
MOH London$2,611 SGD

42 data points across 7 retailers

6 retailers$835 SGD to $2,611 SGD

B+
Cheapest Retailer
-
$835 SGD
$653 USD
B+
Retailer 2
-
$1,079 SGD
€804 EUR
View
B
Retailer 3
-
$1,113 SGD
$871 USD
View
B
Retailer 4
-
$1,164 SGD
£717 GBP
View
Retailer 5
-
$1,291 SGD
$1,010 USD
View
Price last confirmed 13 days ago
Most Expensive
B
MOH London
LG494172710 · Oct 26
$2,611 SGD
£1,608 GBP
View
5 more retailers have this diamond
Prices start from $835 SGDSave up to $1,776 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.

B+
1.39ct Cushion
$835 SGD