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Radiant|Lab Grown|IGI

3.12ct D IF Radiant Lab Grown Diamond

ID • D/IF • IGI LG731557448

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

Certificate IGI LG731557448

Diamond specifications and retailer prices

From $1,366 CAD
$978 USD
As of October 30, 2026
Save $10,759 CAD (89%) vs most expensive(unlock to see where)
17 retailers carry this diamond
Most expensive: $12,125 CAD at Do Amore Diamonds · As of October 30, 2026
View at Do Amore Diamonds

About this 3.12ct lab-grown radiant diamond

This 3.12ct lab-grown radiant 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 LG731557448 or 731557448. Listed at 17 retailers as of October 30, 2026, with prices from $1,366 to $12,125, a $10,759 spread on the same certified stone. Do Amore Diamonds lists it at $12,125. 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
Color
IF
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle44.3°
Pavilion angle34.3°
OriginLab Grown
Grading LabIGI
CertificateIGI LG731557448
Dimensions10.23 × 7.31 × 4.87 mm
L/W Ratio1.40
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
10.23 mm7.31 mm3.12 ctD / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG731557448
Side View
Table 64.0%Crown 44.3°Girdle: Slightly ThickPavilion 34.3°Culet: NoneDepth 66.6%

Caratlytics Score

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A+
Exceptional
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 30
Current: $12,125 CAD|Low: $1,366 CAD|High: $14,640 CAD|Avg: $4,860 CAD|-17.2%
Do Amore Diamonds
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 31, 2026
Retailer 11$1,366 CAD
Retailer 17$1,516 CAD
Retailer 6$1,823 CAD
Retailer 10$1,836 CAD
Retailer 9$1,919 CAD
Retailer 16$2,581 CAD
Retailer 3$2,906 CAD
Retailer 15$3,277 CAD
Retailer 12$3,291 CAD
Retailer 2$3,414 CAD
Retailer 4$4,110 CAD
Retailer 14$4,526 CAD
Retailer 13$5,961 CAD
Retailer 5$7,550 CAD
Retailer 7$9,718 CAD
Retailer 8$11,832 CAD
Do Amore Diamonds$12,125 CAD

35 data points across 17 retailers

17 retailers$1,366 CAD to $12,125 CAD

A+
Cheapest Retailer
-
$1,366 CAD
$978 USD
A
Retailer 2
-
$1,516 CAD
$1,085 USD
View
A
Retailer 3
-
$1,823 CAD
$1,305 USD
View
A
Retailer 4
-
$1,836 CAD
$1,314 USD
View
A
Retailer 5
-
$1,919 CAD
$1,374 USD
View
Final sale: no returns
A
Retailer 6
-
$2,581 CAD
$1,848 USD
View
Retailer 7
-
$2,906 CAD
€1,981 EUR
View
Price last confirmed 7 days ago
A
Retailer 8
-
$3,277 CAD
$2,346 USD
View
A
Retailer 9
-
$3,291 CAD
$2,356 USD
View
A
Retailer 10
-
$3,414 CAD
$2,444 USD
View
Retailer 11
-
$4,110 CAD
A$4,526 AUD
View
Price last confirmed 9 days ago
A
Retailer 12
-
$4,526 CAD
$3,240 USD
View
B+
Retailer 13
-
$5,961 CAD
£3,360 GBP
View
Retailer 14
-
$7,550 CAD
$5,405 USD
View
Price last confirmed 9 days ago
Retailer 15
-
$9,718 CAD
A$10,703 AUD
View
Price last confirmed 22 days ago
B
Retailer 16
-
$11,832 CAD
$8,470 USD
View
Most Expensive
B
Do Amore Diamonds
27-B48F5ABFF · Oct 30
$12,125 CAD
$8,680 USD
View
16 more retailers have this diamond
Prices start from $1,366 CADSave up to $10,759 CAD

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
$1,366 CAD