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Radiant|Lab Grown|IGI

3.18ct D IF Radiant Lab Grown Diamond

ID • D/IF • IGI LG822622999

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

Certificate IGI LG822622999

Diamond specifications and retailer prices

From £837 GBP
$1,121 USD
As of October 30, 2026
Save £6,597 GBP (89%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: £7,433 GBP at Do Amore Diamonds · As of October 30, 2026
View at Do Amore Diamonds

About this 3.18ct lab-grown radiant diamond

This 3.18ct lab-grown radiant sits in the three to five carat band, graded D colour (colourless) and IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG822622999 or 822622999. Listed at 14 retailers as of October 30, 2026, with prices from £837 to £7,433, a £6,597 spread on the same certified stone. Do Amore Diamonds lists it at £7,433. 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

3.18
Carat
D
Colour
IF
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle45.2°
Pavilion angle36.6°
OriginLab Grown
Grading LabIGI
CertificateIGI LG822622999
Dimensions10.21 × 7.29 × 5.13 mm
L/W Ratio1.40
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
10.21 mm7.29 mm3.18 ctD / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG822622999
Side View
Table 63.0%Crown 45.2°Girdle: MED-STKPavilion 36.6°Culet: NoneDepth 70.4%

Caratlytics Score

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

Price History

Last verified: Oct 30
Current: £7,433 GBP|Low: £837 GBP|High: £9,359 GBP|Avg: £3,554 GBP|-6.7%
Do Amore Diamonds
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
October 30, 2026
Retailer 2£837 GBP
Retailer 14£940 GBP
Retailer 9£1,101 GBP
Retailer 12£1,592 GBP
Retailer 15£1,796 GBP
Retailer 8£1,844 GBP
Retailer 13£1,975 GBP
Retailer 11£2,008 GBP
Retailer 3£2,546 GBP
Retailer 10£3,461 GBP
Retailer 4£4,019 GBP
Retailer 7£4,488 GBP
Retailer 6£5,288 GBP
Retailer 5£6,172 GBP
Do Amore Diamonds£7,433 GBP

34 data points across 15 retailers

14 retailers£837 GBP to £7,433 GBP

A
Cheapest Retailer
-
£837 GBP
$1,121 USD
A
Retailer 2
-
£940 GBP
$1,260 USD
View
A
Retailer 3
-
£1,101 GBP
$1,475 USD
View
A
Retailer 4
-
£1,592 GBP
$2,133 USD
View
Retailer 5
-
£1,796 GBP
€2,292 EUR
View
Price last confirmed 7 days ago
A
Retailer 6
-
£1,844 GBP
$2,471 USD
View
A
Retailer 7
-
£1,975 GBP
$2,646 USD
View
A
Retailer 8
-
£2,008 GBP
$2,691 USD
View
Retailer 9
-
£2,546 GBP
A$5,248 AUD
View
Price last confirmed 8 days ago
B+
Retailer 10
-
£3,461 GBP
View
Retailer 11
-
£4,019 GBP
$5,385 USD
View
Price last confirmed 11 days ago
Retailer 12
-
£5,288 GBP
A$10,901 AUD
View
Price last confirmed 21 days ago
B
Retailer 13
-
£6,172 GBP
$8,270 USD
View
Most Expensive
B
Do Amore Diamonds
27-B6179899E · Oct 30
£7,433 GBP
$9,960 USD
View
13 more retailers have this diamond
Prices start from £837 GBPSave up to £6,597 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
3.18ct Radiant
£837 GBP