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Oval|Lab Grown|IGI

3.12ct D IF Oval Lab Grown Diamond

EX • D/IF • IGI LG768631106

Shape and cutting style on the report: Oval brilliant

Certificate IGI LG768631106

Diamond specifications and retailer prices

From £665 GBP
$885 USD
As of October 29, 2026
Save £7,100 GBP (91%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: £7,765 GBP at Brilliant Earth · As of October 29, 2026
View at Brilliant Earth

About this 3.12ct lab-grown oval diamond

This 3.12ct lab-grown oval 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 LG768631106 or 768631106. Listed at 19 retailers as of October 29, 2026, with prices from £665 to £7,765, a £7,100 spread on the same certified stone. Brilliant Earth lists it at £7,765. 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
D
Colour
IF
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36.4°
Pavilion angle40.1°
OriginLab Grown
Grading LabIGI
CertificateIGI LG768631106
Dimensions11.36 × 11.36 × 8.05 mm
L/W Ratio1.00
Girdle conditionFaceted
Culet sizePointed
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
11.36 mm11.36 mm3.12 ctD / IF
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG768631106
Side View
Table 59.0%Crown 36.4°Girdle: MED-STKPavilion 40.1°Culet: NoneDepth 64.7%

Caratlytics Score

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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 29
Current: £7,765 GBP|Low: £665 GBP|High: £7,765 GBP|Avg: £2,675 GBP
Brilliant Earth
Retailer 2
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Retailer 12
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Retailer 18
October 30, 2026
Retailer 12£665 GBP
Retailer 3£728 GBP
Retailer 15£916 GBP
Retailer 7£946 GBP
Retailer 2£1,016 GBP
Retailer 17£1,238 GBP
Retailer 5£1,433 GBP
Retailer 18£1,596 GBP
Retailer 11£1,756 GBP
Retailer 4£1,785 GBP
Retailer 6£2,037 GBP
Retailer 16£2,213 GBP
Retailer 13£2,903 GBP
Retailer 8£4,096 GBP
Retailer 9£5,600 GBP
Retailer 14£5,902 GBP
Retailer 10£6,668 GBP
Brilliant Earth£7,765 GBP

37 data points across 18 retailers

19 retailers£665 GBP to £7,765 GBP

A
Cheapest Retailer
-
£665 GBP
$885 USD
A
Retailer 2
-
£728 GBP
$969 USD
View
A
Retailer 3
-
£880 GBP
$1,172 USD
View
Final sale: no returns
A
Retailer 4
-
£916 GBP
$1,220 USD
View
A
Retailer 5
-
£946 GBP
$1,260 USD
View
A
Retailer 6
-
£1,016 GBP
View
A
Retailer 7
-
£1,238 GBP
$1,648 USD
View
A
Retailer 8
-
£1,433 GBP
€1,818 EUR
View
A
Retailer 9
-
£1,596 GBP
$2,125 USD
View
A
Retailer 10
-
£1,756 GBP
$2,338 USD
View
A
Retailer 11
-
£1,785 GBP
$2,377 USD
View
Retailer 12
-
£2,037 GBP
A$4,174 AUD
View
Price last confirmed 8 days ago
A
Retailer 13
-
£2,213 GBP
$2,947 USD
View
B+
Retailer 14
-
£2,903 GBP
View
Retailer 15
-
£4,096 GBP
$5,455 USD
View
Price last confirmed 11 days ago
Retailer 16
-
£5,600 GBP
A$11,473 AUD
View
Price last confirmed 21 days ago
B
Retailer 17
-
£5,902 GBP
$7,860 USD
View
B
Retailer 18
-
£6,668 GBP
$8,879 USD
View
Most Expensive
B
Brilliant Earth
18707230Y · Oct 29
£7,765 GBP
$10,340 USD
View
18 more retailers have this diamond
Prices start from £665 GBPSave up to £7,100 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 Oval
£665 GBP