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Radiant|Lab Grown|IGI

3.12ct D IF Radiant Lab Grown Diamond

VG • D/IF • IGI LG573303676

Shape and cutting style on the report: Cut cornered rectangular modified brilliant

Certificate IGI LG573303676

Diamond specifications and retailer prices

From £1,448 GBP
$1,940 USD
As of October 31, 2026
Save £3,813 GBP (72%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: £5,261 GBP at Taylor and Hart · As of October 30, 2026
View at Taylor and Hart

About this 3.12ct lab-grown radiant diamond

This 3.12ct lab-grown radiant sits in the three to five carat band, graded D colour (colourless) and IF clarity (flawless or internally-flawless), with a very-good cut grade and certified by IGI LG573303676 or 573303676. Listed at 14 retailers as of October 30, 2026, with prices from £1,448 to £5,261, a £3,813 spread on the same certified stone. Taylor and Hart lists it at £5,261. 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

3.12
Carat
D
Colour
IF
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle45.4°
Pavilion angle33.9°
OriginLab Grown
Grading LabIGI
CertificateIGI LG573303676
Dimensions10.75 × 6.78 × 4.69 mm
L/W Ratio1.59
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
10.75 mm6.78 mm3.12 ctD / IF
OriginLab Grown
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG573303676
Side View
Table 66.0%Crown 45.4°Girdle: Slightly ThickPavilion 33.9°Culet: NoneDepth 69.2%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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Price History

Last verified: Oct 31
Current: £2,127 GBP|Low: £1,380 GBP|High: £5,263 GBP|Avg: £2,901 GBP|+2.6%
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
Taylor and Hart
October 31, 2026
Retailer 12£1,448 GBP
Retailer 11£1,627 GBP
Retailer 3£1,644 GBP
Retailer 8£1,795 GBP
Retailer 1£2,127 GBP
Retailer 2£2,355 GBP
Retailer 9£2,415 GBP
Retailer 5£2,582 GBP
Retailer 10£3,105 GBP
Retailer 4£3,463 GBP
Retailer 6£4,042 GBP
Retailer 13£4,290 GBP
Retailer 7£4,541 GBP
Taylor and Hart£5,261 GBP

34 data points across 14 retailers

14 retailers£1,448 GBP to £5,261 GBP

A
Cheapest Retailer
-
£1,448 GBP
$1,940 USD
Final sale: no returns
A
Retailer 2
-
£1,627 GBP
$2,180 USD
View
A
Retailer 3
-
£1,644 GBP
$2,203 USD
View
A
Retailer 4
-
£1,795 GBP
View
A
Retailer 5
-
£2,127 GBP
View
B+
Retailer 6
-
£2,355 GBP
$3,155 USD
View
A
Retailer 7
-
£2,415 GBP
$3,236 USD
View
B+
Retailer 8
-
£2,582 GBP
$3,459 USD
View
B+
Retailer 9
-
£3,105 GBP
View
B+
Retailer 10
-
£3,463 GBP
ZAR 74,956 ZAR
View
B
Retailer 11
-
£4,042 GBP
$5,416 USD
View
B
Retailer 12
-
£4,290 GBP
View
B
Retailer 13
-
£4,541 GBP
$6,084 USD
View
Most Expensive
B
Taylor and Hart
S8ZOF0A · Oct 30
£5,261 GBP
$7,049 USD
View
13 more retailers have this diamond
Prices start from £1,448 GBPSave up to £3,813 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 Radiant
£1,448 GBP