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Oval|Lab Grown|IGI

3.12ct D IF Oval Lab Grown Diamond

EX • D/IF • IGI LG754594331

Shape and cutting style on the report: Oval brilliant

Certificate IGI LG754594331

Diamond specifications and retailer prices

From $1,260 AUD
$885 USD
As of October 29, 2026
Save $11,380 AUD (90%) vs most expensive(unlock to see where)
20 retailers carry this diamond
Most expensive: $12,640 AUD 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 top-tier cut grade and certified by IGI LG754594331 or 754594331. Listed at 20 retailers as of October 29, 2026, with prices from $1,260 to $12,640, a $11,380 spread on the same certified stone. Blue Nile lists it at $12,640. 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 angle36.6°
Pavilion angle39.3°
OriginLab Grown
Grading LabIGI
CertificateIGI LG754594331
Dimensions11.43 × 11.43 × 8.13 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
11.43 mm11.43 mm3.12 ctD / IF
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG754594331
Side View
Table 58.0%Crown 36.6°Girdle: STK-THKPavilion 39.3°Culet: NoneDepth 63.0%

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: $3,253 AUD|Low: $1,260 AUD|High: $14,720 AUD|Avg: $4,555 AUD|-2.7%
Retailer 1
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
Retailer 16
Retailer 17
Retailer 18
October 31, 2026
Retailer 15$1,260 AUD
Retailer 3$1,379 AUD
Retailer 11$1,728 AUD
Retailer 8$1,794 AUD
Retailer 13$1,926 AUD
Retailer 18$2,346 AUD
Retailer 6$2,718 AUD
Retailer 2$3,025 AUD
Retailer 1$3,253 AUD
Retailer 14$3,328 AUD
Retailer 5$3,644 AUD
Retailer 7$3,862 AUD
Retailer 17$4,196 AUD
Retailer 4$5,511 AUD
Retailer 9$7,766 AUD
Retailer 10$10,616 AUD
Retailer 16$11,189 AUD
Retailer 12$12,029 AUD

37 data points across 18 retailers

20 retailers$1,260 AUD to $12,640 AUD

A
Cheapest Retailer
-
$1,260 AUD
$885 USD
A
Retailer 2
-
$1,379 AUD
$969 USD
View
A
Retailer 3
-
$1,668 AUD
$1,172 USD
View
Final sale: no returns
A
Retailer 4
-
$1,728 AUD
$1,214 USD
View
A
Retailer 5
-
$1,794 AUD
$1,260 USD
View
A
Retailer 6
-
$1,926 AUD
£1,065 GBP
View
A
Retailer 7
-
$2,346 AUD
$1,648 USD
View
A
Retailer 8
-
$2,718 AUD
€1,818 EUR
View
A
Retailer 9
-
$3,025 AUD
$2,125 USD
View
A
Retailer 10
-
$3,253 AUD
$2,285 USD
View
A
Retailer 11
-
$3,328 AUD
$2,338 USD
View
A
Retailer 12
-
$3,644 AUD
View
Retailer 13
-
$3,862 AUD
View
Price last confirmed 9 days ago
A
Retailer 14
-
$4,196 AUD
$2,947 USD
View
B+
Retailer 15
-
$5,511 AUD
£3,048 GBP
View
Retailer 16
-
$7,766 AUD
$5,455 USD
View
Price last confirmed 12 days ago
Retailer 17
-
$10,616 AUD
View
Price last confirmed 22 days ago
B
Retailer 18
-
$11,189 AUD
$7,860 USD
View
B
Retailer 19
-
$12,029 AUD
$8,450 USD
View
Most Expensive
B
Blue Nile
28013553 · Oct 29
$12,640 AUD
$8,879 USD
View
19 more retailers have this diamond
Prices start from $1,260 AUDSave up to $11,380 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
$1,260 AUD