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Cushion|Lab Grown|IGI

3.17ct E IF Cushion Lab Grown Diamond

EX • E/IF • IGI LG741580359

Shape and cutting style on the report: Cushion modified brilliant

Certificate IGI LG741580359

Diamond specifications and retailer prices

From £1,777 GBP
As of October 30, 2026
Save £2,654 GBP (60%) vs most expensive(unlock to see where)
7 retailers carry this diamond
Most expensive: £4,431 GBP at Taylor and Hart · As of October 30, 2026
View at Taylor and Hart

About this 3.17ct lab-grown cushion diamond

This 3.17ct lab-grown cushion sits in the three to five carat band, graded E colour (colourless) and IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG741580359 or 741580359. Listed at 7 retailers as of October 30, 2026, with prices from £1,777 to £4,431, a £2,654 spread on the same certified stone. Taylor and Hart lists it at £4,431. 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

3.17
Carat
E
Colour
IF
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33.9°
Pavilion angle35.4°
OriginLab Grown
Grading LabIGI
CertificateIGI LG741580359
Dimensions9.88 × 7.45 × 5.00 mm
L/W Ratio1.33
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
9.88 mm7.45 mm3.17 ctE / IF
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG741580359
Side View
Table 59.0%Crown 33.9°Girdle: MED-STKPavilion 35.4°Culet: NoneDepth 67.1%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 30
Current: £1,777 GBP|Low: £1,766 GBP|High: £4,431 GBP|Avg: £2,746 GBP|-6.6%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Taylor and Hart
October 30, 2026
Retailer 1£1,777 GBP
Retailer 4£1,801 GBP
Retailer 2£2,051 GBP
Retailer 5£2,509 GBP
Retailer 3£3,582 GBP
Retailer 6£4,310 GBP
Taylor and Hart£4,431 GBP

42 data points across 7 retailers

7 retailers£1,777 GBP to £4,431 GBP

A
Cheapest Retailer
-
£1,777 GBP
A
Retailer 2
-
£1,801 GBP
$2,398 USD
View
A
Retailer 3
-
£2,051 GBP
€2,601 EUR
View
A
Retailer 4
-
£2,509 GBP
$3,341 USD
View
B+
Retailer 5
-
£3,582 GBP
View
Retailer 6
-
£4,310 GBP
$5,740 USD
View
Price last confirmed 8 days ago
Most Expensive
B+
Taylor and Hart
ONUH8LS · Oct 30
£4,431 GBP
$5,901 USD
View
6 more retailers have this diamond
Prices start from £1,777 GBPSave up to £2,654 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.

A
3.17ct Cushion
£1,777 GBP