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Cushion|Lab Grown|IGI

3.08ct I SI1 Cushion Lab Grown Diamond

ID • I/SI1 • IGI LG845616064

Shape and cutting style on the report: Cushion brilliant

Certificate IGI LG845616064

Diamond specifications and retailer prices

From £1,052 GBP
$1,409 USD
As of October 31, 2026
Save £2,920 GBP (74%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: £3,972 GBP at Taylor and Hart · As of October 31, 2026
View at Taylor and Hart

About this 3.08ct lab-grown cushion diamond

This 3.08ct lab-grown cushion sits in the three to five carat band, graded I colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG845616064 or 845616064. Listed at 11 retailers as of October 31, 2026, with prices from £1,052 to £3,972, a £2,920 spread on the same certified stone. Taylor and Hart lists it at £3,972. 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

3.08
Carat
I
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36.1°
Pavilion angle41.2°
OriginLab Grown
Grading LabIGI
CertificateIGI LG845616064
Dimensions11.74 × 7.63 × 4.68 mm
L/W Ratio1.54
Girdle conditionFaceted
Culet sizeLarge
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
11.74 mm7.63 mm3.08 ctI / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG845616064
Side View
Table 54.0%Crown 36.1°Girdle: MED-THKPavilion 41.2°Culet: LargeDepth 61.3%

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 31
Current: £1,643 GBP|Low: £1,052 GBP|High: £4,333 GBP|Avg: £2,172 GBP|-4.6%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Taylor and Hart
October 31, 2026
Retailer 5£1,052 GBP
Retailer 7£1,157 GBP
Retailer 10£1,194 GBP
Retailer 4£1,358 GBP
Retailer 3£1,474 GBP
Retailer 9£1,474 GBP
Retailer 1£1,643 GBP
Retailer 6£2,470 GBP
Retailer 2£3,451 GBP
Retailer 8£3,522 GBP
Taylor and Hart£3,972 GBP

8 data points across 11 retailers

11 retailers£1,052 GBP to £3,972 GBP

A
Cheapest Retailer
-
£1,052 GBP
$1,409 USD
B+
Retailer 2
-
£1,157 GBP
$1,550 USD
View
B+
Retailer 3
-
£1,194 GBP
HK$12,500 HKD
View
B+
Retailer 4
-
£1,358 GBP
$1,820 USD
View
B+
Retailer 5
-
£1,474 GBP
$1,975 USD
View
B
Retailer 6
-
£1,474 GBP
$1,975 USD
View
B+
Retailer 7
-
£1,643 GBP
€2,096 EUR
View
B
Retailer 8
-
£2,470 GBP
$3,310 USD
View
B
Retailer 9
-
£3,451 GBP
SGD 6,248 SGD
View
B
Retailer 10
-
£3,522 GBP
View
Most Expensive
B
Taylor and Hart
4M3QZP5 · Oct 31
£3,972 GBP
$5,321 USD
View
10 more retailers have this diamond
Prices start from £1,052 GBPSave up to £2,920 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
3.08ct Cushion
£1,052 GBP