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Radiant|Lab Grown|IGI

3.12ct E IF Radiant Lab Grown Diamond

ID • E/IF • IGI LG605367011

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

Certificate IGI LG605367011

Diamond specifications and retailer prices

From $5,287 AUD
$3,714 USD
As of October 27, 2026
Save $16,376 AUD (76%) vs most expensive(unlock to see where)
22 retailers carry this diamond
Most expensive: $21,662 AUD at Taylor and Hart · As of October 27, 2026
View at Taylor and Hart

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 LG605367011 or 605367011. Listed at 22 retailers as of October 27, 2026, with prices from $5,287 to $21,662, a $16,376 spread on the same certified stone. Taylor and Hart lists it at $21,662. 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 angle46.4°
Pavilion angle30.6°
OriginLab Grown
Grading LabIGI
CertificateIGI LG605367011
Dimensions10.05 × 7.10 × 4.87 mm
L/W Ratio1.42
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
10.05 mm7.10 mm3.12 ctE / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG605367011
Side View
Table 65.0%Crown 46.4°Girdle: MED-STKPavilion 30.6°Culet: NoneDepth 68.6%

Caratlytics Score

How it works →
A
Excellent
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 27
Current: $14,239 AUD|Low: $5,076 AUD|High: $17,857 AUD|Avg: $9,543 AUD|+1.9%
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
October 29, 2026
Retailer 17$5,287 AUD
Retailer 7$5,920 AUD
Retailer 4$6,133 AUD
Retailer 9$6,133 AUD
Retailer 5$6,348 AUD
Retailer 12$6,789 AUD
Retailer 16$7,396 AUD
Retailer 6$7,664 AUD
Retailer 10$8,021 AUD
Retailer 13$8,865 AUD
Retailer 14$10,314 AUD
Retailer 2$11,117 AUD
Retailer 11$13,207 AUD
Retailer 15$14,033 AUD
Retailer 1$14,239 AUD
Retailer 3$15,441 AUD
Retailer 8$17,857 AUD

34 data points across 17 retailers

22 retailers$5,287 AUD to $21,662 AUD

A
Cheapest Retailer
-
$5,287 AUD
$3,714 USD
B+
Retailer 2
-
$5,719 AUD
$4,018 USD
View
B+
Retailer 3
-
$5,752 AUD
$4,041 USD
View
B+
Retailer 4
-
$5,893 AUD
$4,140 USD
View
B+
Retailer 5
-
$5,920 AUD
$4,159 USD
View
Final sale: no returns
B+
Retailer 6
-
$6,133 AUD
$4,309 USD
View
Retailer 7
-
$6,133 AUD
$4,309 USD
View
Price last confirmed 17 days ago
B+
Retailer 8
-
$6,348 AUD
$4,460 USD
View
B+
Retailer 9
-
$6,789 AUD
£3,756 GBP
View
B+
Retailer 10
-
$7,396 AUD
$5,196 USD
View
B+
Retailer 11
-
$7,664 AUD
$5,384 USD
View
B+
Retailer 12
-
$8,021 AUD
£4,437 GBP
View
B+
Retailer 13
-
$8,865 AUD
$6,228 USD
View
B
Retailer 14
-
$9,415 AUD
£5,208 GBP
View
B+
Retailer 15
-
$10,314 AUD
€6,901 EUR
View
B
Retailer 16
-
$11,117 AUD
$7,810 USD
View
B
Retailer 17
-
$13,207 AUD
£7,306 GBP
View
Retailer 18
-
$14,033 AUD
View
Price last confirmed 7 days ago
B
Retailer 19
-
$14,239 AUD
ZAR 161,603 ZAR
View
B
Retailer 20
-
$15,441 AUD
$10,848 USD
View
B
Retailer 21
-
$17,857 AUD
$12,546 USD
View
Most Expensive
B
Taylor and Hart
ES467IL · Oct 27
$21,662 AUD
$15,219 USD
View
21 more retailers have this diamond
Prices start from $5,287 AUDSave up to $16,376 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
$5,287 AUD