Radiant|Lab Grown|IGI

3.15ct D IF Radiant Lab Grown Diamond

ID • D/IF • IGI LG817696082

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

Certificate IGI LG817696082

Diamond specifications and retailer prices

From $1,343 USD
As of October 29, 2026
Save $3,702 USD (73%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: $7,021 USD at Novita Diamonds · As of October 8, 2026
View at Novita 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 LG817696082 or 817696082. Listed at 16 retailers as of October 29, 2026, with a 276% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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 angle44.5°
Pavilion angle34.9°
OriginLab Grown
Grading LabIGI
CertificateIGI LG817696082
Dimensions10.89 × 6.84 × 4.74 mm
L/W Ratio1.59
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
10.89 mm6.84 mm3.15 ctD / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG817696082
Side View
Table 67.0%Crown 44.5°Girdle: STK-THKPavilion 34.9°Culet: NoneDepth 69.3%

Caratlytics Score

How it works →
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 29
Current: $5,045 USD|Low: $1,343 USD|High: $5,199 USD|Avg: $2,985 USD|-3.0%
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
October 30, 2026
Retailer 11$1,343 USD
Retailer 13$1,565 USD
Retailer 4$1,730 USD
Retailer 15$2,000 USD
Retailer 8$2,020 USD
Retailer 5$2,129 USD
Retailer 6$2,688 USD
Retailer 10$3,110 USD
Retailer 7$3,178 USD
Retailer 12$3,232 USD
Retailer 3$3,383 USD
Retailer 14$3,869 USD
Retailer 2$4,496 USD
Retailer 9$4,878 USD
Retailer 1$5,045 USD

21 data points across 15 retailers

16 retailers$1,343 USD to $5,045 USD

A
Cheapest Retailer
-
$1,343 USD
Final sale: no returns
A
Retailer 2
-
$1,565 USD
View
A
Retailer 3
-
$1,730 USD
View
A
Retailer 4
-
$2,000 USD
View
A
Retailer 5
-
$2,020 USD
£1,590 GBP
View
A
Retailer 6
-
$2,129 USD
€2,028 EUR
View
A
Retailer 7
-
$2,688 USD
View
A
Retailer 8
-
$3,110 USD
View
Retailer 9
-
$3,178 USD
A$4,889 AUD
View
Price last confirmed 8 days ago
A
Retailer 10
-
$3,232 USD
ZAR 52,215 ZAR
View
A
Retailer 11
-
$3,383 USD
£2,664 GBP
View
B+
Retailer 12
-
$3,869 USD
View
B+
Retailer 13
-
$4,496 USD
£3,540 GBP
View
B+
Retailer 14
-
$4,878 USD
View
B+
Retailer 15
-
$5,045 USD
View
Most Expensive
Novita Diamonds
cert_817696082 · Oct 8
$7,021 USD
A$10,802 AUD
View
Price last confirmed 21 days ago
15 more retailers have this diamond
Prices start from $1,343 USDSave up to $3,702 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