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Oval|Lab Grown|IGI

3.12ct D IF Oval Lab Grown Diamond

ID • D/IF • IGI LG844664145

Shape and cutting style on the report: Oval brilliant

Certificate IGI LG844664145

Diamond specifications and retailer prices

From £692 GBP
$921 USD
As of October 29, 2026
Save £10,242 GBP (94%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: £10,934 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 LG844664145 or 844664145. Listed at 16 retailers as of October 29, 2026, with prices from £692 to £10,934, a £10,242 spread on the same certified stone. Brilliant Earth lists it at £10,934. 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
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33.4°
Pavilion angle40°
OriginLab Grown
Grading LabIGI
CertificateIGI LG844664145
Dimensions11.70 × 8.33 × 5.03 mm
L/W Ratio1.40
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
Top View
11.70 mm8.33 mm3.12 ctD / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG844664145
Side View
Table 60.0%Crown 33.4°Girdle: MED-STKPavilion 40°Culet: NoneDepth 60.4%

Caratlytics Score

How it works →
A+
Exceptional
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: £10,934 GBP|Low: £692 GBP|High: £10,934 GBP|Avg: £2,916 GBP
Brilliant Earth
Retailer 2
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Retailer 8
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Retailer 11
Retailer 12
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Retailer 18
October 30, 2026
Retailer 3£692 GBP
Retailer 17£752 GBP
Retailer 12£941 GBP
Retailer 15£969 GBP
Retailer 2£1,057 GBP
Retailer 4£1,286 GBP
Retailer 9£1,486 GBP
Retailer 13£1,660 GBP
Retailer 16£1,759 GBP
Retailer 5£1,763 GBP
Retailer 7£2,077 GBP
Retailer 18£2,286 GBP
Retailer 11£3,020 GBP
Retailer 10£3,639 GBP
Retailer 8£4,096 GBP
Retailer 14£6,143 GBP
Retailer 6£6,668 GBP
Brilliant Earth£10,934 GBP

15 data points across 18 retailers

16 retailers£692 GBP to £10,934 GBP

A+
Cheapest Retailer
-
£692 GBP
$921 USD
A
Retailer 2
-
£752 GBP
$1,002 USD
View
A
Retailer 3
-
£941 GBP
$1,253 USD
View
A
Retailer 4
-
£969 GBP
$1,290 USD
View
A
Retailer 5
-
£1,057 GBP
View
A
Retailer 6
-
£1,286 GBP
$1,713 USD
View
A
Retailer 7
-
£1,660 GBP
$2,211 USD
View
A
Retailer 8
-
£1,759 GBP
$2,342 USD
View
A
Retailer 9
-
£1,763 GBP
$2,348 USD
View
Retailer 10
-
£2,077 GBP
A$4,256 AUD
View
Price last confirmed 8 days ago
A
Retailer 11
-
£2,286 GBP
$3,045 USD
View
B+
Retailer 12
-
£3,020 GBP
View
Retailer 13
-
£4,096 GBP
$5,455 USD
View
Price last confirmed 11 days ago
B
Retailer 14
-
£6,143 GBP
$8,180 USD
View
B
Retailer 15
-
£6,668 GBP
$8,879 USD
View
Most Expensive
B
Brilliant Earth
22165708Y · Oct 29
£10,934 GBP
$14,560 USD
View
15 more retailers have this diamond
Prices start from £692 GBPSave up to £10,242 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
£692 GBP