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Oval|Lab Grown|IGI

3.12ct D IF Oval Lab Grown Diamond

VG • D/IF • IGI LG844602149

Shape and cutting style on the report: Oval brilliant

Certificate IGI LG844602149

Diamond specifications and retailer prices

From £687 GBP
$921 USD
As of October 29, 2026
Save £5,939 GBP (90%) vs most expensive(unlock to see where)
17 retailers carry this diamond
Most expensive: £6,627 GBP at Blue Nile · As of October 29, 2026
View at Blue Nile

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 very-good cut grade and certified by IGI LG844602149 or 844602149. Listed at 17 retailers as of October 29, 2026, with prices from £687 to £6,627, a £5,939 spread on the same certified stone. Blue Nile lists it at £6,627. 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 angle36.2°
Pavilion angle40°
OriginLab Grown
Grading LabIGI
CertificateIGI LG844602149
Dimensions11.82 × 8.18 × 5.17 mm
L/W Ratio1.44
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
11.82 mm8.18 mm3.12 ctD / IF
OriginLab Grown
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG844602149
Side View
Table 56.0%Crown 36.2°Girdle: MED-STKPavilion 40°Culet: NoneDepth 63.2%

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: £6,627 GBP|Low: £687 GBP|High: £10,926 GBP|Avg: £2,751 GBP
Blue Nile
Retailer 2
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October 31, 2026
Retailer 4£687 GBP
Retailer 19£748 GBP
Retailer 14£935 GBP
Retailer 18£963 GBP
Retailer 13£1,051 GBP
Retailer 5£1,278 GBP
Retailer 9£1,477 GBP
Retailer 15£1,650 GBP
Retailer 17£1,748 GBP
Retailer 2£1,774 GBP
Retailer 7£2,065 GBP
Retailer 3£2,272 GBP
Retailer 11£2,762 GBP
Retailer 6£3,048 GBP
Retailer 10£3,617 GBP
Retailer 8£4,071 GBP
Retailer 16£6,105 GBP
Retailer 12£6,306 GBP
Blue Nile£6,627 GBP

17 data points across 19 retailers

17 retailers£687 GBP to £6,627 GBP

A
Cheapest Retailer
-
£687 GBP
$921 USD
A
Retailer 2
-
£748 GBP
$1,002 USD
View
A
Retailer 3
-
£935 GBP
$1,253 USD
View
A
Retailer 4
-
£963 GBP
$1,290 USD
View
A
Retailer 5
-
£1,051 GBP
View
A
Retailer 6
-
£1,278 GBP
$1,713 USD
View
A
Retailer 7
-
£1,650 GBP
$2,211 USD
View
A
Retailer 8
-
£1,748 GBP
$2,342 USD
View
A
Retailer 9
-
£1,774 GBP
$2,377 USD
View
Retailer 10
-
£2,065 GBP
A$4,256 AUD
View
Price last confirmed 9 days ago
B+
Retailer 11
-
£2,272 GBP
$3,045 USD
View
Retailer 12
-
£2,762 GBP
$3,701 USD
View
Price last confirmed 16 days ago
B+
Retailer 13
-
£3,048 GBP
View
Retailer 14
-
£4,071 GBP
$5,455 USD
View
Price last confirmed 12 days ago
B
Retailer 15
-
£6,105 GBP
$8,180 USD
View
B
Retailer 16
-
£6,306 GBP
$8,450 USD
View
Most Expensive
B
Blue Nile
30380015 · Oct 29
£6,627 GBP
$8,879 USD
View
16 more retailers have this diamond
Prices start from £687 GBPSave up to £5,939 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
£687 GBP