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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 £999 GBP
$1,338 USD
As of October 31, 2026
Save £2,767 GBP (73%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: £5,240 GBP 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 31, 2026, with a 277% 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
Colour
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
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 31
Current: £1,574 GBP|Low: £999 GBP|High: £3,880 GBP|Avg: £2,200 GBP|-3.8%
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 31, 2026
Retailer 8£999 GBP
Retailer 2£1,168 GBP
Retailer 11£1,284 GBP
Retailer 9£1,489 GBP
Retailer 4£1,493 GBP
Retailer 1£1,574 GBP
Retailer 10£1,990 GBP
Retailer 14£2,321 GBP
Retailer 7£2,372 GBP
Retailer 15£2,412 GBP
Retailer 6£2,525 GBP
Retailer 3£2,888 GBP
Retailer 5£3,355 GBP
Retailer 13£3,640 GBP
Retailer 12£3,765 GBP

21 data points across 15 retailers

16 retailers£999 GBP to £3,765 GBP

A
Cheapest Retailer
-
£999 GBP
$1,338 USD
Final sale: no returns
A
Retailer 2
-
£1,168 GBP
$1,565 USD
View
A
Retailer 3
-
£1,284 GBP
$1,720 USD
View
A
Retailer 4
-
£1,489 GBP
View
A
Retailer 5
-
£1,493 GBP
$2,000 USD
View
A
Retailer 6
-
£1,574 GBP
€2,009 EUR
View
A
Retailer 7
-
£1,990 GBP
$2,667 USD
View
A
Retailer 8
-
£2,321 GBP
$3,110 USD
View
Retailer 9
-
£2,372 GBP
A$4,889 AUD
View
Price last confirmed 9 days ago
A
Retailer 10
-
£2,412 GBP
ZAR 52,215 ZAR
View
A
Retailer 11
-
£2,525 GBP
View
B+
Retailer 12
-
£2,888 GBP
$3,869 USD
View
B+
Retailer 13
-
£3,355 GBP
View
B+
Retailer 14
-
£3,640 GBP
$4,878 USD
View
B+
Retailer 15
-
£3,765 GBP
$5,045 USD
View
Most Expensive
Novita Diamonds
cert_817696082 · Oct 8
£5,240 GBP
A$10,802 AUD
View
Price last confirmed 22 days ago
15 more retailers have this diamond
Prices start from £999 GBPSave up to £2,767 GBP

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
£999 GBP