CaratHunter
Plans
Cushion|Lab Grown|IGI

1.39ct D IF Cushion Lab Grown Diamond

VG • D/IF • IGI LG623488096

Shape and cutting style on the report: Cushion brilliant

Certificate IGI LG623488096

Diamond specifications and retailer prices

From £1,060 GBP
$1,420 USD
As of October 30, 2026
Save £1,194 GBP (53%) vs most expensive(unlock to see where)
3 retailers carry this diamond
Most expensive: £2,254 GBP at Kay Jewelers · As of October 30, 2026
View at Kay Jewelers

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 IF clarity (flawless or internally-flawless), with a very-good cut grade and certified by IGI LG623488096 or 623488096. Listed at 3 retailers as of October 30, 2026, with prices from £1,060 to £2,254, a £1,194 spread on the same certified stone. Kay Jewelers lists it at £2,254. 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
IF
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33.6°
Pavilion angle36.4°
OriginLab Grown
Grading LabIGI
CertificateIGI LG623488096
Dimensions7.51 × 5.99 × 4.00 mm
L/W Ratio1.25
Girdle conditionFaceted
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
7.51 mm5.99 mm1.39 ctD / IF
OriginLab Grown
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG623488096
Side View
Table 60.0%Crown 33.6°Girdle: MED-THKPavilion 36.4°Culet: NoneDepth 66.8%

Caratlytics Score

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

Price History

Last verified: Oct 30
Current: £2,254 GBP|Low: £1,060 GBP|High: £2,254 GBP|Avg: £1,654 GBP
Kay Jewelers
Retailer 2
Retailer 3
September 26, 2026
Retailer 3£1,060 GBP
Retailer 2£1,644 GBP
Kay Jewelers£2,254 GBP

2 data points across 3 retailers

3 retailers£1,060 GBP to £2,254 GBP

B+
Cheapest Retailer
-
£1,060 GBP
$1,420 USD
B
Retailer 2
-
£1,644 GBP
$2,203 USD
View
Most Expensive
B
Kay Jewelers
254087196 · Oct 30
£2,254 GBP
$3,020 USD
View
2 more retailers have this diamond
Prices start from £1,060 GBPSave up to £1,194 GBP

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
£1,060 GBP