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Round|Lab Grown|IGI

5.91ct E VS1 Round Lab Grown Diamond

EX • E/VS1 • IGI LG839618988

Shape and cutting style on the report: Round brilliant

Certificate IGI LG839618988

Diamond specifications and retailer prices

From £802 GBP
$1,075 USD
As of October 29, 2026
Save £4,701 GBP (85%) vs most expensive(unlock to see where)
5 retailers carry this diamond
Most expensive: £5,504 GBP at Frank Darling · As of October 29, 2026
View at Frank Darling

About this 5.91ct lab-grown round diamond

This 5.91ct lab-grown round sits in the over five carat band, graded E colour (colourless) and VS1 clarity (very-slightly-included), with a top-tier cut grade and certified by IGI LG839618988 or 839618988. Listed at 5 retailers as of October 29, 2026, with prices from £802 to £5,504, a £4,701 spread on the same certified stone. Frank Darling lists it at £5,504. 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

5.91
Carat
E
Colour
VS1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33.7°
Pavilion angle41.6°
OriginLab Grown
Grading LabIGI
CertificateIGI LG839618988
Dimensions11.64 × 11.73 × 7.10 mm
L/W Ratio1.01
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
11.64 mm11.73 mm5.91 ctE / VS1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG839618988
Side View
Table 61.0%Crown 33.7°Girdle: MED-STKPavilion 41.6°Culet: NoneDepth 60.8%

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 29
Current: £5,504 GBP|Low: £802 GBP|High: £5,505 GBP|Avg: £2,555 GBP|-0.0%
Frank Darling
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
October 27, 2026
Retailer 3£802 GBP
Retailer 4£1,090 GBP
Retailer 6£1,284 GBP
Retailer 2£2,281 GBP
Retailer 5£4,053 GBP
Frank Darling£5,504 GBP

7 data points across 6 retailers

5 retailers£802 GBP to £5,504 GBP

A
Cheapest Retailer
-
£802 GBP
$1,075 USD
Final sale: no returns
B+
Retailer 2
-
£1,090 GBP
$1,461 USD
View
B+
Retailer 3
-
£2,281 GBP
$3,056 USD
View
Retailer 4
-
£4,053 GBP
$5,430 USD
View
Price last confirmed 12 days ago
Most Expensive
B
Frank Darling
100198203844KD · Oct 29
£5,504 GBP
$7,374 USD
View
4 more retailers have this diamond
Prices start from £802 GBPSave up to £4,701 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
5.91ct Round
£802 GBP