Radiant|Lab Grown|IGI

3.15ct D IF Radiant Lab Grown Diamond

ID • D/IF • IGI LG745508340

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

Certificate IGI LG745508340

Diamond specifications and retailer prices

From $973 USD
As of October 30, 2026
Save $7,857 USD (89%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: $8,830 USD at Do Amore Diamonds · As of October 29, 2026
View at Do Amore Diamonds

About this 3.15ct lab-grown radiant diamond

This 3.15ct 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 LG745508340 or 745508340. Listed at 14 retailers as of October 29, 2026, with prices from $973 to $8,830, a $7,857 spread on the same certified stone. Do Amore Diamonds lists it at $8,830. 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

3.15
Carat
D
Color
IF
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle42.5°
Pavilion angle35.3°
OriginLab Grown
Grading LabIGI
CertificateIGI LG745508340
Dimensions9.88 × 7.20 × 4.98 mm
L/W Ratio1.37
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
9.88 mm7.20 mm3.15 ctD / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG745508340
Side View
Table 62.0%Crown 42.5°Girdle: STK-THKPavilion 35.3°Culet: NoneDepth 69.2%

Caratlytics Score

How it works →
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: $8,830 USD|Low: $973 USD|High: $12,420 USD|Avg: $3,632 USD|-11.2%
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
October 30, 2026
Retailer 2$973 USD
Retailer 10$1,082 USD
Retailer 6$1,365 USD
Retailer 12$1,441 USD
Retailer 11$1,844 USD
Retailer 9$1,870 USD
Retailer 8$2,387 USD
Retailer 3$2,392 USD
Retailer 13$2,911 USD
Retailer 4$3,371 USD
Retailer 7$4,342 USD
Retailer 14$5,460 USD
Retailer 5$8,190 USD
Do Amore Diamonds$8,830 USD

32 data points across 14 retailers

14 retailers$973 USD to $8,830 USD

A+
Cheapest Retailer
-
$973 USD
A
Retailer 2
-
$1,082 USD
View
A
Retailer 3
-
$1,365 USD
View
Final sale: no returns
A
Retailer 4
-
$1,441 USD
View
A
Retailer 5
-
$1,844 USD
View
A
Retailer 6
-
$1,870 USD
View
A
Retailer 7
-
$2,387 USD
View
A
Retailer 8
-
$2,392 USD
View
Retailer 9
-
$2,911 USD
A$4,478 AUD
View
Price last confirmed 8 days ago
A
Retailer 10
-
$3,371 USD
View
B+
Retailer 11
-
$4,342 USD
£3,419 GBP
View
Retailer 12
-
$5,460 USD
View
Price last confirmed 11 days ago
B
Retailer 13
-
$8,190 USD
View
Most Expensive
B
Do Amore Diamonds
27-34F605E6C · Oct 29
$8,830 USD
View
13 more retailers have this diamond
Prices start from $973 USDSave up to $7,857 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+
3.15ct Radiant
$973 USD