Radiant|Lab Grown|IGI

3.10ct E VS1 Radiant Lab Grown Diamond

ID • E/VS1 • IGI LG840655647

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

Certificate IGI LG840655647

Diamond specifications and retailer prices

From £358 GBP
$477 USD
As of October 23, 2026
Save £1,304 GBP (78%) vs most expensive(unlock to see where)
23 retailers carry this diamond
Most expensive: £2,947 GBP at Helzberg Diamonds · As of October 7, 2026
View at Helzberg Diamonds

About this 3.1ct lab-grown radiant diamond

This 3.1ct lab-grown radiant sits in the three to five carat band, graded E colour (colourless) and VS1 clarity (very-slightly-included), with a top-tier cut grade and certified by IGI LG840655647 or 840655647. Listed at 23 retailers as of October 23, 2026, with a 364% 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

3.10
Carat
E
Colour
VS1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle50.8°
Pavilion angle34.7°
OriginLab Grown
Grading LabIGI
CertificateIGI LG840655647
Dimensions7.23 × 9.99 × 4.89 mm
L/W Ratio1.38
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
7.23 mm9.99 mm3.10 ctE / VS1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG840655647
Side View
Table 65.0%Crown 50.8°Girdle: MED-STKPavilion 34.7°Culet: NoneDepth 67.6%

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 23
Current: £2,947 GBP|Low: £358 GBP|High: £374,583 GBP|Avg: £37,186 GBP
Helzberg Diamonds
Retailer 2
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Retailer 24
October 27, 2026
Retailer 5£358 GBP
Retailer 7£400 GBP
Retailer 23£401 GBP
Retailer 18£445 GBP
Retailer 8£490 GBP
Retailer 2£509 GBP
Retailer 19£548 GBP
Retailer 9£602 GBP
Retailer 6£653 GBP
Retailer 17£716 GBP
Retailer 13£733 GBP
Retailer 22£801 GBP
Retailer 3£956 GBP
Retailer 12£1,195 GBP
Retailer 14£1,424 GBP
Retailer 20£1,428 GBP
Retailer 24£1,450 GBP
Retailer 4£1,467 GBP
Retailer 11£1,561 GBP
Retailer 21£1,635 GBP
Retailer 10£1,663 GBP
Helzberg Diamonds£2,947 GBP
Retailer 16£146,543 GBP
Retailer 15£231,839 GBP

10 data points across 24 retailers

23 retailers£358 GBP to £1,663 GBP

A
Cheapest Retailer
-
£358 GBP
$477 USD
A
Retailer 2
-
£400 GBP
$533 USD
View
Final sale: no returns
A
Retailer 3
-
£401 GBP
$534 USD
View
A
Retailer 4
-
£445 GBP
$592 USD
View
A
Retailer 5
-
£490 GBP
HK$5,100 HKD
View
A
Retailer 6
-
£509 GBP
View
A
Retailer 7
-
£548 GBP
$730 USD
View
B+
Retailer 8
-
£602 GBP
$802 USD
View
A
Retailer 9
-
£653 GBP
€828 EUR
View
A
Retailer 10
-
£733 GBP
View
A
Retailer 11
-
£801 GBP
$1,067 USD
View
A
Retailer 12
-
£956 GBP
ZAR 20,569 ZAR
View
B+
Retailer 13
-
£1,195 GBP
$1,591 USD
View
B+
Retailer 14
-
£1,424 GBP
SGD 2,562 SGD
View
B+
Retailer 15
-
£1,428 GBP
$1,902 USD
View
B+
Retailer 16
-
£1,450 GBP
$1,931 USD
View
B+
Retailer 17
-
£1,467 GBP
$1,954 USD
View
B+
Retailer 18
-
£1,561 GBP
$2,078 USD
View
B+
Retailer 19
-
£1,635 GBP
View
B+
Retailer 20
-
£1,663 GBP
$2,214 USD
View
Most Expensive
B
Helzberg Diamonds
ZXZOKGMLLMKN · Oct 7
£2,947 GBP
$3,925 USD
View
Price last confirmed 22 days ago
20 more retailers have this diamond
Prices start from £358 GBPSave up to £1,304 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
£358 GBP