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Radiant|Lab Grown|IGI

3.10ct D FL Radiant Lab Grown Diamond

ID • D/FL • IGI LG817693421

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

Certificate IGI LG817693421

Diamond specifications and retailer prices

From £1,473 GBP
$1,973 USD
As of October 30, 2026
Save £4,508 GBP (75%) vs most expensive(unlock to see where)
20 retailers carry this diamond
Most expensive: £5,980 GBP at Taylor and Hart · As of October 30, 2026
View at Taylor and Hart

About this 3.1ct lab-grown radiant diamond

This 3.1ct lab-grown radiant sits in the three to five carat band, graded D colour (colourless) and FL clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG817693421 or 817693421. Listed at 20 retailers as of October 30, 2026, with prices from £1,473 to £5,980, a £4,508 spread on the same certified stone. Taylor and Hart lists it at £5,980. 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

3.10
Carat
D
Colour
FL
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle45.6°
Pavilion angle35.4°
OriginLab Grown
Grading LabIGI
CertificateIGI LG817693421
Dimensions10.30 × 7.28 × 4.78 mm
L/W Ratio1.41
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
10.30 mm7.28 mm3.10 ctD / FL
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG817693421
Side View
Table 62.0%Crown 45.6°Girdle: Slightly ThickPavilion 35.4°Culet: NoneDepth 65.7%

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: £2,700 GBP|Low: £1,473 GBP|High: £6,611 GBP|Avg: £3,445 GBP|-27.8%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
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Retailer 10
Retailer 11
Retailer 12
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Retailer 19
Taylor and Hart
October 31, 2026
Retailer 3£1,473 GBP
Retailer 10£1,602 GBP
Retailer 5£1,649 GBP
Retailer 18£1,708 GBP
Retailer 15£1,832 GBP
Retailer 6£1,968 GBP
Retailer 17£2,349 GBP
Retailer 12£2,350 GBP
Retailer 11£2,406 GBP
Retailer 4£2,449 GBP
Retailer 16£2,675 GBP
Retailer 1£2,700 GBP
Retailer 19£2,805 GBP
Retailer 2£3,242 GBP
Retailer 13£3,967 GBP
Retailer 7£4,408 GBP
Retailer 14£4,905 GBP
Retailer 8£5,114 GBP
Retailer 9£5,708 GBP
Taylor and Hart£5,980 GBP

36 data points across 20 retailers

20 retailers£1,473 GBP to £5,980 GBP

A
Cheapest Retailer
-
£1,473 GBP
$1,973 USD
A
Retailer 2
-
£1,602 GBP
$2,147 USD
View
A
Retailer 3
-
£1,649 GBP
$2,209 USD
View
Final sale: no returns
A
Retailer 4
-
£1,708 GBP
$2,289 USD
View
A
Retailer 5
-
£1,832 GBP
$2,455 USD
View
A
Retailer 6
-
£1,968 GBP
HK$20,600 HKD
View
A
Retailer 7
-
£2,349 GBP
$3,147 USD
View
A
Retailer 8
-
£2,350 GBP
View
Retailer 9
-
£2,406 GBP
$3,224 USD
View
Price last confirmed 19 days ago
A
Retailer 10
-
£2,449 GBP
$3,282 USD
View
A
Retailer 11
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£2,675 GBP
$3,584 USD
View
B+
Retailer 12
-
£2,700 GBP
€3,445 EUR
View
B+
Retailer 13
-
£2,805 GBP
$3,759 USD
View
B+
Retailer 14
-
£3,242 GBP
View
B+
Retailer 15
-
£3,967 GBP
ZAR 85,876 ZAR
View
B+
Retailer 16
-
£4,408 GBP
$5,906 USD
View
B
Retailer 17
-
£4,905 GBP
View
B
Retailer 18
-
£5,114 GBP
$6,853 USD
View
B
Retailer 19
-
£5,708 GBP
SGD 10,335 SGD
View
Most Expensive
B
Taylor and Hart
1ZBGUXG · Oct 30
£5,980 GBP
$8,013 USD
View
19 more retailers have this diamond
Prices start from £1,473 GBPSave up to £4,508 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
3.10ct Radiant
£1,473 GBP