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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 $1,311 AUD
$921 USD
As of October 29, 2026
Save $11,329 AUD (90%) vs most expensive(unlock to see where)
18 retailers carry this diamond
Most expensive: $12,640 AUD at Blue Nile · As of October 31, 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 18 retailers as of October 29, 2026, with prices from $1,311 to $12,640, a $11,329 spread on the same certified stone. Blue Nile lists it at $12,640. 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

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 29
Current: $12,640 AUD|Low: $1,311 AUD|High: $20,842 AUD|Avg: $5,247 AUD
Blue Nile
Retailer 2
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Retailer 19
October 31, 2026
Retailer 5$1,311 AUD
Retailer 3$1,426 AUD
Retailer 16$1,784 AUD
Retailer 12$1,794 AUD
Retailer 15$2,004 AUD
Retailer 6$2,439 AUD
Retailer 2$2,718 AUD
Retailer 17$3,148 AUD
Retailer 19$3,334 AUD
Retailer 13$3,384 AUD
Retailer 8$3,938 AUD
Retailer 4$4,335 AUD
Retailer 11$5,269 AUD
Retailer 7$5,814 AUD
Retailer 10$6,899 AUD
Retailer 9$7,766 AUD
Retailer 18$11,645 AUD
Retailer 14$12,029 AUD
Blue Nile$12,640 AUD

17 data points across 19 retailers

18 retailers$1,311 AUD to $12,640 AUD

A
Cheapest Retailer
-
$1,311 AUD
$921 USD
A
Retailer 2
-
$1,426 AUD
$1,002 USD
View
A
Retailer 3
-
$1,784 AUD
$1,253 USD
View
A
Retailer 4
-
$1,794 AUD
$1,260 USD
View
A
Retailer 5
-
$2,004 AUD
£1,109 GBP
View
A
Retailer 6
-
$2,439 AUD
$1,713 USD
View
Retailer 7
-
$2,718 AUD
€1,818 EUR
View
A
Retailer 8
-
$3,148 AUD
$2,211 USD
View
A
Retailer 9
-
$3,334 AUD
$2,342 USD
View
A
Retailer 10
-
$3,384 AUD
$2,377 USD
View
Retailer 11
-
$3,938 AUD
View
Price last confirmed 9 days ago
B+
Retailer 12
-
$4,335 AUD
$3,045 USD
View
Retailer 13
-
$5,269 AUD
$3,701 USD
View
Price last confirmed 16 days ago
B+
Retailer 14
-
$5,814 AUD
£3,216 GBP
View
Retailer 15
-
$7,766 AUD
$5,455 USD
View
Price last confirmed 12 days ago
B
Retailer 16
-
$11,645 AUD
$8,180 USD
View
B
Retailer 17
-
$12,029 AUD
$8,450 USD
View
Most Expensive
B
Blue Nile
30380015 · Oct 31
$12,640 AUD
$8,879 USD
View
17 more retailers have this diamond
Prices start from $1,311 AUDSave up to $11,329 AUD

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
$1,311 AUD