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Radiant|Lab Grown|IGI

3.15ct D IF Radiant Lab Grown Diamond

EX • D/IF • IGI LG628447916

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

Certificate IGI LG628447916

Diamond specifications and retailer prices

From $1,582 AUD
$1,111 USD
As of October 30, 2026
Save $12,455 AUD (89%) vs most expensive(unlock to see where)
17 retailers carry this diamond
Most expensive: $14,037 AUD at Do Amore Diamonds · As of October 31, 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 LG628447916 or 628447916. Listed at 17 retailers as of October 30, 2026, with prices from $1,582 to $14,037, a $12,455 spread on the same certified stone. Do Amore Diamonds lists it at $14,037. 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
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle46.9°
Pavilion angle32.6°
OriginLab Grown
Grading LabIGI
CertificateIGI LG628447916
Dimensions10.40 × 10.40 × 7.13 mm
L/W Ratio1.00
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
10.40 mm10.40 mm3.15 ctD / IF
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG628447916
Side View
Table 63.0%Crown 46.9°Girdle: Slightly ThickPavilion 32.6°Culet: NoneDepth 66.3%

Caratlytics Score

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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 30
Current: $14,037 AUD|Low: $1,582 AUD|High: $15,062 AUD|Avg: $5,270 AUD|-6.8%
Do Amore Diamonds
Retailer 2
Retailer 3
Retailer 4
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Retailer 7
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Retailer 10
Retailer 11
Retailer 12
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Retailer 17
October 31, 2026
Retailer 13$1,582 AUD
Retailer 4$1,777 AUD
Retailer 9$1,973 AUD
Retailer 12$2,077 AUD
Retailer 10$2,128 AUD
Retailer 3$3,011 AUD
Retailer 2$3,296 AUD
Retailer 14$3,455 AUD
Retailer 11$3,721 AUD
Retailer 17$3,795 AUD
Retailer 5$4,812 AUD
Retailer 16$5,178 AUD
Retailer 15$6,539 AUD
Retailer 6$7,666 AUD
Retailer 7$9,996 AUD
Retailer 8$11,659 AUD
Do Amore Diamonds$14,037 AUD

34 data points across 17 retailers

17 retailers$1,582 AUD to $14,037 AUD

A
Cheapest Retailer
-
$1,582 AUD
$1,111 USD
A
Retailer 2
-
$1,777 AUD
$1,248 USD
View
A
Retailer 3
-
$1,973 AUD
$1,386 USD
View
Final sale: no returns
A
Retailer 4
-
$2,077 AUD
$1,459 USD
View
A
Retailer 5
-
$2,128 AUD
$1,495 USD
View
A
Retailer 6
-
$3,011 AUD
$2,115 USD
View
A
Retailer 7
-
$3,296 AUD
€2,205 EUR
View
A
Retailer 8
-
$3,455 AUD
$2,427 USD
View
A
Retailer 9
-
$3,721 AUD
$2,614 USD
View
A
Retailer 10
-
$3,795 AUD
$2,666 USD
View
Retailer 11
-
$4,812 AUD
View
Price last confirmed 9 days ago
B+
Retailer 12
-
$5,178 AUD
$3,637 USD
View
B+
Retailer 13
-
$6,539 AUD
£3,617 GBP
View
Retailer 14
-
$7,666 AUD
$5,385 USD
View
Price last confirmed 12 days ago
Retailer 15
-
$9,996 AUD
View
Price last confirmed 22 days ago
B
Retailer 16
-
$11,659 AUD
$8,190 USD
View
Most Expensive
B
Do Amore Diamonds
27-B5D3A5C08 · Oct 31
$14,037 AUD
$9,860 USD
View
16 more retailers have this diamond
Prices start from $1,582 AUDSave up to $12,455 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
$1,582 AUD