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Cushion|Lab Grown|IGI

3.12ct I VVS1 Cushion Lab Grown Diamond

ID • I/VVS1 • IGI LG831621876

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

Certificate IGI LG831621876

Diamond specifications and retailer prices

From £1,204 GBP
$1,613 USD
As of October 29, 2026
Save £3,186 GBP (73%) vs most expensive(unlock to see where)
18 retailers carry this diamond
Most expensive: £4,390 GBP at Taylor and Hart · As of October 30, 2026
View at Taylor and Hart

About this 3.12ct lab-grown cushion diamond

This 3.12ct lab-grown cushion sits in the three to five carat band, graded I colour (near-colourless) and VVS1 clarity (very-very-slightly-included), with a top-tier cut grade and certified by IGI LG831621876 or 831621876. Listed at 18 retailers as of October 29, 2026, with prices from £1,204 to £4,390, a £3,186 spread on the same certified stone. Taylor and Hart lists it at £4,390. 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

3.12
Carat
I
Colour
VVS1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36.7°
Pavilion angle31.2°
OriginLab Grown
Grading LabIGI
CertificateIGI LG831621876
Dimensions8.41 × 8.02 × 5.02 mm
L/W Ratio1.05
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 Light Blue
Top View
8.41 mm8.02 mm3.12 ctI / VVS1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG831621876
Side View
Table 62.0%Crown 36.7°Girdle: ThickPavilion 31.2°Culet: NoneDepth 62.6%

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 29
Current: £2,120 GBP|Low: £1,204 GBP|High: £4,390 GBP|Avg: £2,380 GBP|-32.2%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Retailer 14
Retailer 15
Retailer 16
Retailer 17
Taylor and Hart
October 30, 2026
Retailer 7£1,204 GBP
Retailer 2£1,247 GBP
Retailer 9£1,320 GBP
Retailer 17£1,373 GBP
Retailer 4£1,411 GBP
Retailer 10£1,429 GBP
Retailer 6£1,443 GBP
Retailer 12£1,912 GBP
Retailer 13£1,968 GBP
Retailer 15£1,996 GBP
Retailer 1£2,120 GBP
Retailer 11£2,896 GBP
Retailer 16£2,989 GBP
Retailer 5£3,014 GBP
Retailer 8£3,074 GBP
Retailer 14£3,567 GBP
Retailer 3£4,171 GBP
Taylor and Hart£4,390 GBP

41 data points across 18 retailers

18 retailers£1,204 GBP to £4,390 GBP

A
Cheapest Retailer
-
£1,204 GBP
$1,613 USD
Final sale: no returns
Retailer 2
-
£1,247 GBP
$1,671 USD
View
Price last confirmed 19 days ago
B+
Retailer 3
-
£1,320 GBP
$1,768 USD
View
B+
Retailer 4
-
£1,373 GBP
$1,840 USD
View
B+
Retailer 5
-
£1,411 GBP
$1,891 USD
View
B+
Retailer 6
-
£1,429 GBP
View
B+
Retailer 7
-
£1,443 GBP
HK$15,100 HKD
View
B+
Retailer 8
-
£1,912 GBP
€2,440 EUR
View
B
Retailer 9
-
£1,968 GBP
$2,637 USD
View
B
Retailer 10
-
£1,996 GBP
$2,674 USD
View
B
Retailer 11
-
£2,120 GBP
$2,840 USD
View
B
Retailer 12
-
£2,896 GBP
ZAR 62,692 ZAR
View
B
Retailer 13
-
£2,989 GBP
$4,005 USD
View
B
Retailer 14
-
£3,014 GBP
View
B
Retailer 15
-
£3,074 GBP
$4,118 USD
View
B
Retailer 16
-
£3,567 GBP
View
B
Retailer 17
-
£4,171 GBP
SGD 7,553 SGD
View
Most Expensive
B
Taylor and Hart
49XGH37 · Oct 30
£4,390 GBP
$5,882 USD
View
17 more retailers have this diamond
Prices start from £1,204 GBPSave up to £3,186 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
3.12ct Cushion
£1,204 GBP