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 $3,714 USD
As of October 27, 2026
Save $11,505 USD (76%) vs most expensive(unlock to see where)
22 retailers carry this diamond
Most expensive: $15,219 USD 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 $3,714 to $15,219, a $11,505 spread on the same certified stone. Taylor and Hart lists it at $15,219. 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
Color
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
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 27
Current: $5,635 USD|Low: $3,566 USD|High: $12,546 USD|Avg: $6,531 USD|-2.6%
Retailer 1
Retailer 2
Retailer 3
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Retailer 5
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Retailer 10
Retailer 11
Retailer 12
Retailer 13
Retailer 14
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Retailer 18
October 29, 2026
Retailer 18$3,714 USD
Retailer 10$4,140 USD
Retailer 7$4,159 USD
Retailer 4$4,309 USD
Retailer 9$4,309 USD
Retailer 5$4,460 USD
Retailer 12$4,770 USD
Retailer 17$5,196 USD
Retailer 6$5,384 USD
Retailer 1$5,635 USD
Retailer 13$6,228 USD
Retailer 15$7,246 USD
Retailer 2$7,810 USD
Retailer 11$9,279 USD
Retailer 16$9,859 USD
Retailer 14$9,964 USD
Retailer 3$10,848 USD
Retailer 8$12,546 USD

35 data points across 18 retailers

22 retailers$3,714 USD to $15,219 USD

A
Cheapest Retailer
-
$3,714 USD
B+
Retailer 2
-
$4,018 USD
View
B+
Retailer 3
-
$4,041 USD
View
B+
Retailer 4
-
$4,140 USD
View
B+
Retailer 5
-
$4,159 USD
View
Final sale: no returns
B+
Retailer 6
-
$4,309 USD
View
B+
Retailer 7
-
$4,309 USD
View
Price last confirmed 16 days ago
B+
Retailer 8
-
$4,460 USD
View
B+
Retailer 9
-
$4,770 USD
£3,756 GBP
View
B+
Retailer 10
-
$5,196 USD
View
B+
Retailer 11
-
$5,384 USD
View
B+
Retailer 12
-
$5,635 USD
£4,437 GBP
View
B+
Retailer 13
-
$6,228 USD
View
B
Retailer 14
-
$6,614 USD
£5,208 GBP
View
B+
Retailer 15
-
$7,246 USD
€6,901 EUR
View
B
Retailer 16
-
$7,810 USD
View
B
Retailer 17
-
$9,279 USD
£7,306 GBP
View
B
Retailer 18
-
$9,859 USD
A$15,167 AUD
View
Price last confirmed 7 days ago
B
Retailer 19
-
$9,964 USD
ZAR 160,969 ZAR
View
B
Retailer 20
-
$10,848 USD
View
B
Retailer 21
-
$12,546 USD
View
Most Expensive
B
Taylor and Hart
ES467IL · Oct 27
$15,219 USD
View
21 more retailers have this diamond
Prices start from $3,714 USDSave up to $11,505 USD

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
$3,714 USD