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9.51ct F SI1 Round Lab Grown Diamond

ID • F/SI1 • IGI LG610311858

Shape and cutting style on the report: Round brilliant

Certificate IGI LG610311858

Diamond specifications and retailer prices

From £1,479 GBP
$1,985 USD
As of November 3, 2026
Save £4,937 GBP (77%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: £6,416 GBP at Brilliant Earth · As of November 2, 2026
View at Brilliant Earth

About this 9.51ct lab-grown round diamond

This 9.51ct lab-grown round sits in the over five carat band, graded F colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG610311858 or 610311858. Listed at 13 retailers as of November 2, 2026, with prices from £1,479 to £6,416, a £4,937 spread on the same certified stone. Brilliant Earth lists it at £6,416. SI-grade stones are eye-clean roughly 60 to 70% of the time at this carat range. Check the inclusion plot on the cert and ask the retailer for high-resolution video before buying.

The 4Cs

9.51
Carat
F
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.3°
Pavilion angle40.5°
OriginLab Grown
Grading LabIGI
CertificateIGI LG610311858
Dimensions13.70 × 13.63 × 8.27 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizePointed
Top View
13.70 mm13.63 mm9.51 ctF / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG610311858
Side View
Table 58.0%Crown 34.3°Girdle: MediumPavilion 40.5°Culet: NoneDepth 60.5%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 3
Current: £6,416 GBP|Low: £1,143 GBP|High: £7,757 GBP|Avg: £2,616 GBP|-17.3%
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
November 3, 2026
Retailer 3£1,143 GBP
Retailer 6£1,479 GBP
Retailer 9£1,616 GBP
Retailer 11£1,753 GBP
Retailer 2£1,907 GBP
Retailer 4£1,952 GBP
Retailer 10£2,126 GBP
Retailer 7£2,389 GBP
Retailer 8£3,564 GBP
Retailer 5£3,859 GBP
Brilliant Earth£6,416 GBP

37 data points across 11 retailers

13 retailers£1,479 GBP to £6,416 GBP

Retailer 1
-
£986 GBP
$1,323 USD
Price last confirmed 40 days ago
Retailer 2
-
£1,072 GBP
$1,439 USD
View
Price last confirmed 40 days ago
Retailer 3
-
£1,127 GBP
$1,513 USD
View
Price last confirmed 36 days ago
B+
Retailer 4
-
£1,479 GBP
$1,985 USD
View
B+
Retailer 5
-
£1,753 GBP
$2,352 USD
View
B+
Retailer 6
-
£1,907 GBP
View
B+
Retailer 7
-
£1,952 GBP
€2,495 EUR
View
B+
Retailer 8
-
£2,126 GBP
$2,853 USD
View
Retailer 9
-
£2,143 GBP
$2,876 USD
View
Price last confirmed 36 days ago
B
Retailer 10
-
£2,389 GBP
$3,206 USD
View
B
Retailer 11
-
£3,564 GBP
$4,783 USD
View
B
Retailer 12
-
£3,859 GBP
View
Most Expensive
B
Brilliant Earth
8644959A · Nov 2
£6,416 GBP
$8,610 USD
View
12 more retailers have this diamond
Prices start from £1,479 GBPSave up to £4,937 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.

B+
9.51ct Round
£1,479 GBP