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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 $1,396 AUD
$981 USD
As of October 29, 2026
Save $4,258 AUD (75%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: $6,849 AUD 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: $2,205 AUD|Low: $1,396 AUD|High: $5,836 AUD|Avg: $3,318 AUD|-5.8%
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 29, 2026
Retailer 12$1,396 AUD
Retailer 9$1,592 AUD
Retailer 2$1,751 AUD
Retailer 13$2,071 AUD
Retailer 4$2,200 AUD
Retailer 1$2,205 AUD
Retailer 5$3,234 AUD
Retailer 6$3,297 AUD
Retailer 7$3,339 AUD
Retailer 14$4,358 AUD
Retailer 3$5,018 AUD
Retailer 11$5,195 AUD
Retailer 8$5,420 AUD
Retailer 10$5,654 AUD

17 data points across 14 retailers

16 retailers$1,396 AUD to $5,654 AUD

A+
Cheapest Retailer
-
$1,396 AUD
$981 USD
Final sale: no returns
A
Retailer 2
-
$1,592 AUD
£881 GBP
View
A
Retailer 3
-
$1,751 AUD
$1,230 USD
View
A
Retailer 4
-
$2,071 AUD
$1,455 USD
View
A
Retailer 5
-
$2,200 AUD
€1,472 EUR
View
A
Retailer 6
-
$2,205 AUD
£1,220 GBP
View
A
Retailer 7
-
$3,234 AUD
$2,272 USD
View
Retailer 8
-
$3,297 AUD
View
Price last confirmed 8 days ago
A
Retailer 9
-
$3,339 AUD
ZAR 37,897 ZAR
View
A
Retailer 10
-
$4,358 AUD
$3,062 USD
View
B+
Retailer 11
-
$4,693 AUD
$3,297 USD
View
B+
Retailer 12
-
$5,018 AUD
$3,525 USD
View
B+
Retailer 13
-
$5,195 AUD
$3,650 USD
View
B+
Retailer 14
-
$5,420 AUD
£2,998 GBP
View
B+
Retailer 15
-
$5,654 AUD
SGD 5,368 SGD
View
Most Expensive
Novita Diamonds
cert_828684106 · Oct 5
$6,849 AUD
View
Price last confirmed 24 days ago
15 more retailers have this diamond
Prices start from $1,396 AUDSave up to $4,258 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 Radiant
$1,396 AUD