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Radiant|Lab Grown|IGI

3.15ct D IF Radiant Lab Grown Diamond

ID • D/IF • IGI LG836694137

Shape and cutting style on the report: Cut cornered rectangular mixed cut

Certificate IGI LG836694137

Diamond specifications and retailer prices

From £1,154 GBP
$1,546 USD
As of October 30, 2026
Save £5,981 GBP (84%) vs most expensive(unlock to see where)
17 retailers carry this diamond
Most expensive: £7,135 GBP 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 LG836694137 or 836694137. Listed at 17 retailers as of October 30, 2026, with prices from £1,154 to £7,135, a £5,981 spread on the same certified stone. Do Amore Diamonds lists it at £7,135. 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 angle32.3°
Pavilion angle49.6°
OriginLab Grown
Grading LabIGI
CertificateIGI LG836694137
Dimensions10.37 × 6.79 × 4.51 mm
L/W Ratio1.53
Culet sizeLarge
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
10.37 mm6.79 mm3.15 ctD / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG836694137
Side View
Table 62.0%Crown 32.3°Girdle: Slightly ThickPavilion 49.6°Culet: LargeDepth 66.4%

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: £7,135 GBP|Low: £1,066 GBP|High: £7,135 GBP|Avg: £2,560 GBP
Do Amore Diamonds
Retailer 2
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Retailer 21
October 31, 2026
Retailer 8£1,154 GBP
Retailer 6£1,255 GBP
Retailer 12£1,288 GBP
Retailer 19£1,338 GBP
Retailer 17£1,340 GBP
Retailer 20£1,496 GBP
Retailer 14£1,842 GBP
Retailer 5£1,852 GBP
Retailer 2£2,094 GBP
Retailer 13£2,112 GBP
Retailer 15£2,367 GBP
Retailer 21£2,769 GBP
Retailer 11£2,912 GBP
Retailer 4£3,060 GBP
Retailer 18£3,430 GBP
Retailer 7£3,457 GBP
Retailer 10£3,722 GBP
Retailer 3£4,050 GBP
Retailer 16£4,467 GBP
Retailer 9£5,192 GBP
Do Amore Diamonds£7,135 GBP

13 data points across 21 retailers

17 retailers£1,154 GBP to £7,135 GBP

A
Cheapest Retailer
-
£1,154 GBP
$1,546 USD
A
Retailer 2
-
£1,255 GBP
$1,682 USD
View
A
Retailer 3
-
£1,338 GBP
$1,793 USD
View
A
Retailer 4
-
£1,340 GBP
$1,796 USD
View
Final sale: no returns
A
Retailer 5
-
£1,496 GBP
$2,004 USD
View
A
Retailer 6
-
£1,852 GBP
$2,481 USD
View
A
Retailer 7
-
£2,094 GBP
View
A
Retailer 8
-
£2,112 GBP
$2,830 USD
View
A
Retailer 9
-
£2,367 GBP
$3,171 USD
View
B+
Retailer 10
-
£2,769 GBP
$3,710 USD
View
B+
Retailer 11
-
£3,060 GBP
View
B+
Retailer 12
-
£3,430 GBP
ZAR 74,249 ZAR
View
B+
Retailer 13
-
£3,457 GBP
$4,632 USD
View
B
Retailer 14
-
£4,050 GBP
$5,426 USD
View
B
Retailer 15
-
£4,467 GBP
View
B
Retailer 16
-
£5,192 GBP
$6,957 USD
View
Most Expensive
B
Do Amore Diamonds
20-E101293 · Oct 31
£7,135 GBP
$9,560 USD
View
16 more retailers have this diamond
Prices start from £1,154 GBPSave up to £5,981 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
£1,154 GBP