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Round|Lab Grown|IGI

1.91ct F VS1 Round Lab Grown Diamond

ID • F/VS1 • IGI LG781609848

Shape and cutting style on the report: Round brilliant

Certificate IGI LG781609848

Diamond specifications and retailer prices

From £199 GBP
$267 USD
As of November 1, 2026
Save £1,204 GBP (86%) vs most expensive(unlock to see where)
23 retailers carry this diamond
Most expensive: £1,403 GBP at Brilliant Earth · As of October 28, 2026
View at Brilliant Earth

About this 1.91ct lab-grown round diamond

This 1.91ct lab-grown round sits in the one-and-a-half to two carat band, graded F colour (colourless) and VS1 clarity (very-slightly-included), with a top-tier cut grade and certified by IGI LG781609848 or 781609848. Listed at 23 retailers as of October 28, 2026, with prices from £199 to £1,403, a £1,204 spread on the same certified stone. Brilliant Earth lists it at £1,403. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.91
Carat
F
Colour
VS1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.3°
Pavilion angle40.7°
OriginLab Grown
Grading LabIGI
CertificateIGI LG781609848
Dimensions8.05 × 7.99 × 4.88 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
8.05 mm7.99 mm1.91 ctF / VS1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG781609848
Side View
Table 57.0%Crown 34.3°Girdle: MED-STKPavilion 40.7°Culet: NoneDepth 60.9%

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: Nov 1
Current: £1,403 GBP|Low: £199 GBP|High: £1,403 GBP|Avg: £564 GBP
Brilliant Earth
Retailer 2
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Retailer 19
November 2, 2026
Retailer 15£199 GBP
Retailer 8£231 GBP
Retailer 7£247 GBP
Retailer 16£366 GBP
Retailer 13£407 GBP
Retailer 4£411 GBP
Retailer 12£427 GBP
Retailer 17£455 GBP
Retailer 2£473 GBP
Retailer 18£514 GBP
Retailer 5£575 GBP
Retailer 14£627 GBP
Retailer 6£796 GBP
Retailer 9£833 GBP
Retailer 11£892 GBP
Retailer 3£952 GBP
Retailer 10£1,018 GBP
Retailer 19£1,111 GBP
Brilliant Earth£1,403 GBP

43 data points across 19 retailers

23 retailers£199 GBP to £1,403 GBP

A
Cheapest Retailer
-
£199 GBP
$267 USD
A
Retailer 2
-
£231 GBP
$310 USD
View
A
Retailer 3
-
£247 GBP
$331 USD
View
Retailer 4
-
£253 GBP
$339 USD
View
Price last confirmed 7 days ago
A
Retailer 5
-
£366 GBP
$490 USD
View
A
Retailer 6
-
£407 GBP
€519 EUR
View
B+
Retailer 7
-
£411 GBP
$551 USD
View
A
Retailer 8
-
£427 GBP
ZAR 9,234 ZAR
View
A
Retailer 9
-
£455 GBP
$610 USD
View
A
Retailer 10
-
£473 GBP
View
A
Retailer 11
-
£514 GBP
$689 USD
View
B+
Retailer 12
-
£575 GBP
A$1,186 AUD
View
Retailer 13
-
£621 GBP
A$1,280 AUD
View
Price last confirmed 123 days ago
B+
Retailer 14
-
£627 GBP
$840 USD
View
Retailer 15
-
£709 GBP
$950 USD
View
Price last confirmed 46 days ago
B+
Retailer 16
-
£796 GBP
$1,066 USD
View
B
Retailer 17
-
£833 GBP
$1,117 USD
View
Retailer 18
-
£892 GBP
$1,195 USD
View
Price last confirmed 28 days ago
B
Retailer 19
-
£908 GBP
$1,216 USD
View
B
Retailer 20
-
£952 GBP
$1,276 USD
View
Retailer 21
-
£1,018 GBP
View
Price last confirmed 11 days ago
B
Retailer 22
-
£1,111 GBP
$1,488 USD
View
Most Expensive
B
Brilliant Earth
18338005A · Oct 28
£1,403 GBP
$1,880 USD
View
22 more retailers have this diamond
Prices start from £199 GBPSave up to £1,204 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
1.91ct Round
£199 GBP