CaratHunter
Plans
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 $1,905 AUD
$1,338 USD
As of October 31, 2026
Save $15,406 AUD (89%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: $17,311 AUD 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 $1,905 to $17,311, a $15,406 spread on the same certified stone. Brilliant Earth lists it at $17,311. 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
Colour
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

How it works →
A+
Exceptional
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 31
Current: $4,426 AUD|Low: $1,905 AUD|High: $9,873 AUD|Avg: $4,368 AUD|-0.4%
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
Retailer 18
October 31, 2026
Retailer 15$1,905 AUD
Retailer 5$2,228 AUD
Retailer 2$2,449 AUD
Retailer 16$2,840 AUD
Retailer 7$2,847 AUD
Retailer 13$3,074 AUD
Retailer 14$3,613 AUD
Retailer 18$3,797 AUD
Retailer 1$4,426 AUD
Retailer 10$4,524 AUD
Retailer 4$4,601 AUD
Retailer 9$4,816 AUD
Retailer 6$5,508 AUD
Retailer 8$6,400 AUD
Retailer 17$6,607 AUD
Retailer 11$6,915 AUD
Retailer 3$7,182 AUD
Retailer 12$9,873 AUD

18 data points across 18 retailers

19 retailers$1,905 AUD to $17,311 AUD

A+
Cheapest Retailer
-
$1,905 AUD
$1,338 USD
Final sale: no returns
A
Retailer 2
-
$2,228 AUD
$1,565 USD
View
A
Retailer 3
-
$2,449 AUD
$1,720 USD
View
A
Retailer 4
-
$2,840 AUD
£1,571 GBP
View
A
Retailer 5
-
$2,847 AUD
$2,000 USD
View
A
Retailer 6
-
$3,074 AUD
CA$2,999 CAD
View
A
Retailer 7
-
$3,613 AUD
€2,417 EUR
View
A
Retailer 8
-
$3,797 AUD
$2,667 USD
View
A
Retailer 9
-
$4,426 AUD
$3,109 USD
View
Retailer 10
-
$4,524 AUD
View
Price last confirmed 9 days ago
A
Retailer 11
-
$4,601 AUD
ZAR 52,215 ZAR
View
A
Retailer 12
-
$4,816 AUD
£2,664 GBP
View
B+
Retailer 13
-
$5,508 AUD
$3,869 USD
View
B+
Retailer 14
-
$6,400 AUD
£3,540 GBP
View
B+
Retailer 15
-
$6,607 AUD
SGD 6,272 SGD
View
B+
Retailer 16
-
$6,915 AUD
$4,858 USD
View
B+
Retailer 17
-
$7,182 AUD
$5,045 USD
View
B+
Retailer 18
-
$9,873 AUD
View
Most Expensive
B
Brilliant Earth
20507935A · Oct 29
$17,311 AUD
$12,160 USD
View
18 more retailers have this diamond
Prices start from $1,905 AUDSave up to $15,406 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+
3.15ct Radiant
$1,905 AUD