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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 $1,634 NZD
$921 USD
As of October 29, 2026
Save $14,120 NZD (90%) vs most expensive(unlock to see where)
17 retailers carry this diamond
Most expensive: $15,754 NZD 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 top-tier cut grade and certified by IGI LG844664145 or 844664145. Listed at 17 retailers as of October 29, 2026, with prices from $1,634 to $15,754, a $14,120 spread on the same certified stone. Blue Nile lists it at $15,754. 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: $15,754 NZD|Low: $1,634 NZD|High: $25,834 NZD|Avg: $6,783 NZD
Blue Nile
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 6$1,634 NZD
Retailer 4$1,778 NZD
Retailer 16$2,223 NZD
Retailer 11$2,236 NZD
Retailer 14$2,498 NZD
Retailer 7$3,039 NZD
Retailer 2$3,387 NZD
Retailer 17$3,923 NZD
Retailer 3$4,155 NZD
Retailer 12$4,218 NZD
Retailer 8$4,908 NZD
Retailer 5$5,402 NZD
Retailer 15$7,136 NZD
Retailer 10$8,598 NZD
Retailer 9$9,679 NZD
Retailer 18$14,514 NZD
Retailer 13$14,993 NZD
Blue Nile$15,754 NZD

16 data points across 18 retailers

17 retailers$1,634 NZD to $15,754 NZD

A+
Cheapest Retailer
-
$1,634 NZD
$921 USD
A
Retailer 2
-
$1,778 NZD
$1,002 USD
View
A
Retailer 3
-
$2,223 NZD
$1,253 USD
View
A
Retailer 4
-
$2,236 NZD
$1,260 USD
View
A
Retailer 5
-
$2,498 NZD
£1,109 GBP
View
A
Retailer 6
-
$3,039 NZD
$1,713 USD
View
Retailer 7
-
$3,387 NZD
€1,818 EUR
View
A
Retailer 8
-
$3,923 NZD
$2,211 USD
View
A
Retailer 9
-
$4,155 NZD
$2,342 USD
View
A
Retailer 10
-
$4,218 NZD
$2,377 USD
View
Retailer 11
-
$4,908 NZD
A$4,256 AUD
View
Price last confirmed 9 days ago
A
Retailer 12
-
$5,402 NZD
$3,045 USD
View
B+
Retailer 13
-
$7,136 NZD
£3,167 GBP
View
Retailer 14
-
$9,679 NZD
$5,455 USD
View
Price last confirmed 12 days ago
B
Retailer 15
-
$14,514 NZD
$8,180 USD
View
B
Retailer 16
-
$14,993 NZD
$8,450 USD
View
Most Expensive
B
Blue Nile
30390503 · Oct 31
$15,754 NZD
$8,879 USD
View
16 more retailers have this diamond
Prices start from $1,634 NZDSave up to $14,120 NZD

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
$1,634 NZD