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Radiant|Lab Grown|IGI

3.12ct E IF Radiant Lab Grown Diamond

ID • E/IF • IGI LG828684106

Shape and cutting style on the report: Cut cornered rectangular modified brilliant

Certificate IGI LG828684106

Diamond specifications and retailer prices

From $1,747 NZD
$981 USD
As of October 29, 2026
Save $5,326 NZD (75%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: $8,568 NZD at Novita Diamonds · As of October 5, 2026
View at Novita Diamonds

About this 3.12ct lab-grown radiant diamond

This 3.12ct lab-grown radiant sits in the three to five carat band, graded E colour (colourless) and IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG828684106 or 828684106. Listed at 16 retailers as of October 29, 2026, with a 305% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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
E
Colour
IF
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle42.2°
Pavilion angle33.9°
OriginLab Grown
Grading LabIGI
CertificateIGI LG828684106
Dimensions11.02 × 7.00 × 4.66 mm
L/W Ratio1.57
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
11.02 mm7.00 mm3.12 ctE / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG828684106
Side View
Table 65.0%Crown 42.2°Girdle: MED-STKPavilion 33.9°Culet: NoneDepth 66.6%

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: $6,242 NZD|Low: $1,747 NZD|High: $7,301 NZD|Avg: $4,152 NZD|-3.8%
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
October 30, 2026
Retailer 13$1,747 NZD
Retailer 10$1,991 NZD
Retailer 3$2,190 NZD
Retailer 14$2,591 NZD
Retailer 4$2,752 NZD
Retailer 7$2,758 NZD
Retailer 5$4,045 NZD
Retailer 6$4,125 NZD
Retailer 8$4,177 NZD
Retailer 2$5,452 NZD
Retailer 1$6,242 NZD
Retailer 12$6,499 NZD
Retailer 9$6,779 NZD
Retailer 11$7,073 NZD

18 data points across 14 retailers

16 retailers$1,747 NZD to $7,073 NZD

A+
Cheapest Retailer
-
$1,747 NZD
$981 USD
Final sale: no returns
A
Retailer 2
-
$1,991 NZD
£881 GBP
View
A
Retailer 3
-
$2,190 NZD
$1,230 USD
View
A
Retailer 4
-
$2,591 NZD
$1,455 USD
View
A
Retailer 5
-
$2,752 NZD
€1,472 EUR
View
A
Retailer 6
-
$2,758 NZD
£1,220 GBP
View
A
Retailer 7
-
$4,045 NZD
$2,272 USD
View
Retailer 8
-
$4,125 NZD
A$3,564 AUD
View
Price last confirmed 8 days ago
A
Retailer 9
-
$4,177 NZD
ZAR 37,897 ZAR
View
A
Retailer 10
-
$5,452 NZD
$3,062 USD
View
B+
Retailer 11
-
$5,870 NZD
$3,297 USD
View
B+
Retailer 12
-
$6,242 NZD
$3,506 USD
View
B+
Retailer 13
-
$6,499 NZD
$3,650 USD
View
B+
Retailer 14
-
$6,779 NZD
£2,998 GBP
View
B+
Retailer 15
-
$7,073 NZD
SGD 5,368 SGD
View
Most Expensive
Novita Diamonds
cert_828684106 · Oct 5
$8,568 NZD
A$7,403 AUD
View
Price last confirmed 24 days ago
15 more retailers have this diamond
Prices start from $1,747 NZDSave up to $5,326 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 Radiant
$1,747 NZD