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Round|Lab Grown|IGI

1.91ct D FL Round Lab Grown Diamond

ID • D/FL • IGI LG825661306

Shape and cutting style on the report: Round brilliant

Certificate IGI LG825661306

Diamond specifications and retailer prices

From £372 GBP
$495 USD
As of October 29, 2026
Save £2,317 GBP (86%) vs most expensive(unlock to see where)
21 retailers carry this diamond
Most expensive: £2,688 GBP at Brilliant Earth · As of October 30, 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 D colour (colourless) and FL clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG825661306 or 825661306. Listed at 21 retailers as of October 29, 2026, with prices from £372 to £2,688, a £2,317 spread on the same certified stone. Brilliant Earth lists it at £2,688. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.91
Carat
D
Colour
FL
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36°
Pavilion angle40.6°
OriginLab Grown
Grading LabIGI
CertificateIGI LG825661306
Dimensions7.89 × 7.94 × 4.94 mm
L/W Ratio1.01
Girdle conditionFaceted
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
7.89 mm7.94 mm1.91 ctD / FL
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG825661306
Side View
Table 57.0%Crown 36°Girdle: THN-MEDPavilion 40.6°Culet: NoneDepth 62.3%

Caratlytics Score

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A+
Exceptional
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 29
Current: £2,688 GBP|Low: £372 GBP|High: £2,688 GBP|Avg: £1,048 GBP
Brilliant Earth
Retailer 2
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Retailer 21
October 30, 2026
Retailer 5£372 GBP
Retailer 18£416 GBP
Retailer 6£432 GBP
Retailer 10£461 GBP
Retailer 14£499 GBP
Retailer 17£567 GBP
Retailer 8£647 GBP
Retailer 20£717 GBP
Retailer 2£764 GBP
Retailer 15£765 GBP
Retailer 16£792 GBP
Retailer 3£1,072 GBP
Retailer 4£1,144 GBP
Retailer 11£1,213 GBP
Retailer 9£1,502 GBP
Retailer 7£1,585 GBP
Retailer 21£1,616 GBP
Retailer 19£1,650 GBP
Retailer 13£1,935 GBP
Retailer 12£2,617 GBP
Brilliant Earth£2,688 GBP

24 data points across 21 retailers

21 retailers£372 GBP to £2,688 GBP

A+
Cheapest Retailer
-
£372 GBP
$495 USD
A
Retailer 2
-
£416 GBP
$554 USD
View
A
Retailer 3
-
£432 GBP
$575 USD
View
Final sale: no returns
A
Retailer 4
-
£461 GBP
$614 USD
View
Retailer 5
-
£499 GBP
$664 USD
View
Price last confirmed 14 days ago
A
Retailer 6
-
£567 GBP
$755 USD
View
A
Retailer 7
-
£647 GBP
$862 USD
View
A
Retailer 8
-
£717 GBP
$955 USD
View
A
Retailer 9
-
£764 GBP
View
A
Retailer 10
-
£765 GBP
€970 EUR
View
A
Retailer 11
-
£792 GBP
ZAR 17,043 ZAR
View
B+
Retailer 12
-
£1,072 GBP
$1,428 USD
View
B+
Retailer 13
-
£1,144 GBP
$1,523 USD
View
B+
Retailer 14
-
£1,213 GBP
$1,615 USD
View
B+
Retailer 15
-
£1,502 GBP
$2,000 USD
View
B+
Retailer 16
-
£1,585 GBP
SGD 2,853 SGD
View
B+
Retailer 17
-
£1,616 GBP
$2,152 USD
View
B+
Retailer 18
-
£1,650 GBP
$2,197 USD
View
B+
Retailer 19
-
£1,935 GBP
View
B
Retailer 20
-
£2,617 GBP
$3,485 USD
View
Most Expensive
B
Brilliant Earth
21589809A · Oct 30
£2,688 GBP
$3,580 USD
View
20 more retailers have this diamond
Prices start from £372 GBPSave up to £2,317 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
£372 GBP