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Round|Lab Grown|IGI

5.91ct E VS1 Round Lab Grown Diamond

EX • E/VS1 • IGI LG828633520

Shape and cutting style on the report: Round brilliant

Certificate IGI LG828633520

Diamond specifications and retailer prices

From £807 GBP
$1,075 USD
As of October 30, 2026
Save £4,730 GBP (85%) vs most expensive(unlock to see where)
5 retailers carry this diamond
Most expensive: £5,538 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 LG828633520 or 828633520. Listed at 5 retailers as of October 29, 2026, with prices from £807 to £5,538, a £4,730 spread on the same certified stone. Frank Darling lists it at £5,538. 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 angle36.4°
Pavilion angle40.8°
OriginLab Grown
Grading LabIGI
CertificateIGI LG828633520
Dimensions11.41 × 11.48 × 7.19 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
11.41 mm11.48 mm5.91 ctE / VS1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG828633520
Side View
Table 58.0%Crown 36.4°Girdle: MED-STKPavilion 40.8°Culet: NoneDepth 62.7%

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 30
Current: £5,538 GBP|Low: £807 GBP|High: £5,539 GBP|Avg: £2,250 GBP|-0.0%
Frank Darling
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
October 30, 2026
Retailer 2£807 GBP
Retailer 4£1,097 GBP
Retailer 6£1,265 GBP
Retailer 3£2,295 GBP
Retailer 5£4,078 GBP
Frank Darling£5,538 GBP

19 data points across 6 retailers

5 retailers£807 GBP to £5,538 GBP

A
Cheapest Retailer
-
£807 GBP
$1,075 USD
Final sale: no returns
B+
Retailer 2
-
£1,097 GBP
$1,461 USD
View
B+
Retailer 3
-
£2,295 GBP
$3,056 USD
View
Retailer 4
-
£4,078 GBP
$5,430 USD
View
Price last confirmed 12 days ago
Most Expensive
B
Frank Darling
100194896716KD · Oct 29
£5,538 GBP
$7,374 USD
View
4 more retailers have this diamond
Prices start from £807 GBPSave up to £4,730 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
£807 GBP