Radiant|Lab Grown|IGI

3.15ct D IF Radiant Lab Grown Diamond

ID • D/IF • IGI LG813609580

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

Certificate IGI LG813609580

Diamond specifications and retailer prices

From $1,343 USD
As of October 29, 2026
Save $10,817 USD (89%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: $12,160 USD at Brilliant Earth · As of October 29, 2026
View at Brilliant Earth

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 LG813609580 or 813609580. Listed at 19 retailers as of October 29, 2026, with prices from $1,343 to $12,160, a $10,817 spread on the same certified stone. Brilliant Earth lists it at $12,160. 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 angle44.2°
Pavilion angle36.1°
OriginLab Grown
Grading LabIGI
CertificateIGI LG813609580
Dimensions10.38 × 7.14 × 4.94 mm
L/W Ratio1.45
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
10.38 mm7.14 mm3.15 ctD / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG813609580
Side View
Table 68.0%Crown 44.2°Girdle: MED-STKPavilion 36.1°Culet: NoneDepth 69.2%

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 29
Current: $2,667 USD|Low: $1,343 USD|High: $5,199 USD|Avg: $3,048 USD|-1.3%
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 31, 2026
Retailer 15$1,343 USD
Retailer 2$1,565 USD
Retailer 10$1,720 USD
Retailer 5$2,000 USD
Retailer 12$2,020 USD
Retailer 16$2,177 USD
Retailer 8$2,532 USD
Retailer 1$2,667 USD
Retailer 14$3,110 USD
Retailer 9$3,178 USD
Retailer 17$3,232 USD
Retailer 7$3,383 USD
Retailer 4$3,869 USD
Retailer 6$4,496 USD
Retailer 3$4,658 USD
Retailer 13$4,878 USD
Retailer 11$5,045 USD

19 data points across 17 retailers

19 retailers$1,343 USD to $12,160 USD

A+
Cheapest Retailer
-
$1,343 USD
Final sale: no returns
A
Retailer 2
-
$1,565 USD
View
A
Retailer 3
-
$1,720 USD
View
A
Retailer 4
-
$2,000 USD
View
A
Retailer 5
-
$2,020 USD
£1,590 GBP
View
A
Retailer 6
-
$2,177 USD
CA$3,024 CAD
View
Retailer 7
-
$2,532 USD
€2,411 EUR
View
Price last confirmed 7 days ago
A
Retailer 8
-
$2,667 USD
View
A
Retailer 9
-
$3,110 USD
View
Retailer 10
-
$3,178 USD
A$4,889 AUD
View
Price last confirmed 9 days ago
A
Retailer 11
-
$3,232 USD
ZAR 52,215 ZAR
View
A
Retailer 12
-
$3,383 USD
£2,664 GBP
View
B+
Retailer 13
-
$3,869 USD
View
B+
Retailer 14
-
$4,496 USD
£3,540 GBP
View
B+
Retailer 15
-
$4,658 USD
SGD 6,295 SGD
View
B+
Retailer 16
-
$4,878 USD
View
B+
Retailer 17
-
$5,045 USD
View
Retailer 18
-
$7,021 USD
A$10,802 AUD
View
Price last confirmed 22 days ago
Most Expensive
B
Brilliant Earth
20507935A · Oct 29
$12,160 USD
View
18 more retailers have this diamond
Prices start from $1,343 USDSave up to $10,817 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
$1,343 USD