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Oval|Lab Grown|IGI

4.12ct D IF Oval Lab Grown Diamond

ID • D/IF • IGI LG800631859

Shape and cutting style on the report: Oval brilliant

Certificate IGI LG800631859

Diamond specifications and retailer prices

From $4,486 AUD
$3,151 USD
As of November 1, 2026
Save $15,430 AUD (77%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: $19,916 AUD at Brilliant Earth · As of November 1, 2026
View at Brilliant Earth

About this 4.12ct lab-grown oval diamond

This 4.12ct 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 LG800631859 or 800631859. Listed at 10 retailers as of November 1, 2026, with prices from $4,486 to $19,916, a $15,430 spread on the same certified stone. Brilliant Earth lists it at $19,916. 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

4.12
Carat
D
Colour
IF
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.7°
Pavilion angle40.4°
OriginLab Grown
Grading LabIGI
CertificateIGI LG800631859
Dimensions13.15 × 8.97 × 5.54 mm
L/W Ratio1.47
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
13.15 mm8.97 mm4.12 ctD / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG800631859
Side View
Table 59.0%Crown 35.7°Girdle: MED-STKPavilion 40.4°Culet: NoneDepth 61.8%

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: Nov 1
Current: $19,916 AUD|Low: $4,486 AUD|High: $29,668 AUD|Avg: $10,621 AUD|-32.9%
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
November 1, 2026
Retailer 6$4,486 AUD
Retailer 9$5,521 AUD
Retailer 3$5,894 AUD
Retailer 5$6,289 AUD
Retailer 7$7,666 AUD
Retailer 4$8,064 AUD
Retailer 10$10,436 AUD
Retailer 2$11,781 AUD
Retailer 8$15,342 AUD
Brilliant Earth$19,916 AUD

30 data points across 10 retailers

10 retailers$4,486 AUD to $19,916 AUD

A
Cheapest Retailer
-
$4,486 AUD
$3,151 USD
Retailer 2
-
$5,521 AUD
HK$30,300 HKD
View
Price last confirmed 43 days ago
A
Retailer 3
-
$5,894 AUD
£3,260 GBP
View
A
Retailer 4
-
$6,289 AUD
$4,418 USD
View
A
Retailer 5
-
$7,666 AUD
$5,385 USD
View
A
Retailer 6
-
$8,064 AUD
€5,395 EUR
View
Retailer 7
-
$10,436 AUD
$7,331 USD
View
Price last confirmed 84 days ago
B+
Retailer 8
-
$11,781 AUD
£6,516 GBP
View
B+
Retailer 9
-
$15,342 AUD
$10,777 USD
View
Most Expensive
B
Brilliant Earth
19994644A · Nov 1
$19,916 AUD
$13,990 USD
View
9 more retailers have this diamond
Prices start from $4,486 AUDSave up to $15,430 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
4.12ct Oval
$4,486 AUD