Round|Lab Grown|IGI

3.56ct F SI1 Round Lab Grown Diamond

EX • F/SI1 • IGI LG610317693

Shape and cutting style on the report: Round brilliant

Certificate IGI LG610317693

Diamond specifications and retailer prices

From £979 GBP
A$2,018 AUD
As of November 2, 2026
18 retailers carry this diamond
Most expensive: £3,336 GBP at Brilliant Earth · As of October 21, 2026
View at Brilliant Earth

About this 3.56ct lab-grown round diamond

This 3.56ct lab-grown round sits in the three to five carat band, graded F colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG610317693 or 610317693. Listed at 18 retailers as of November 2, 2026. 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

3.56
Carat
F
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.3°
Pavilion angle41.7°
OriginLab Grown
Grading LabIGI
CertificateIGI LG610317693
Dimensions9.77 × 9.71 × 6.10 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process and may include post-growth treatment Type IIa
Top View
9.77 mm9.71 mm3.56 ctF / SI1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG610317693
Side View
Table 59.0%Crown 35.3°Girdle: MED-STKPavilion 41.7°Culet: NoneDepth 62.6%

Caratlytics Score

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B+
Very Good
Strong quality and value balance
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Price History

Last verified: Nov 2
Current: £3,336 GBP|Low: £292 GBP|High: £3,441 GBP|Avg: £948 GBP|-3.0%
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Retailer 14
Retailer 15
Retailer 16
Retailer 17
Retailer 18
October 23, 2026
Retailer 18£304 GBP
Retailer 11£340 GBP
Retailer 8£340 GBP
Retailer 14£452 GBP
Retailer 4£506 GBP
Retailer 3£569 GBP
Retailer 2£632 GBP
Retailer 12£667 GBP
Retailer 7£764 GBP
Retailer 6£935 GBP
Retailer 13£979 GBP
Retailer 17£1,002 GBP
Retailer 9£1,377 GBP
Retailer 15£1,381 GBP
Retailer 10£1,448 GBP
Retailer 5£1,471 GBP
Retailer 16£1,535 GBP
Brilliant Earth£3,336 GBP

32 data points across 18 retailers

18 retailers

Retailer 1
-
£304 GBP
$407 USD
Price last confirmed 12 days ago
Retailer 2
-
£340 GBP
$456 USD
View
Price last confirmed 13 days ago
Retailer 3
-
£377 GBP
$505 USD
View
Price last confirmed 14 days ago
Retailer 4
-
£452 GBP
$605 USD
View
Price last confirmed 11 days ago
Retailer 5
-
£506 GBP
HK$5,300 HKD
View
Price last confirmed 10 days ago
Retailer 6
-
£569 GBP
$762 USD
View
Price last confirmed 12 days ago
Retailer 7
-
£632 GBP
€806 EUR
View
Price last confirmed 10 days ago
Retailer 8
-
£667 GBP
View
Price last confirmed 12 days ago
Retailer 9
-
£764 GBP
$1,024 USD
View
Price last confirmed 12 days ago
Retailer 10
-
£935 GBP
$1,252 USD
View
Price last confirmed 13 days ago
B+
Retailer 11
-
£979 GBP
A$2,018 AUD
View
Retailer 12
-
£1,002 GBP
$1,343 USD
View
Price last confirmed 11 days ago
Retailer 13
-
£1,377 GBP
$1,845 USD
View
Price last confirmed 12 days ago
Retailer 14
-
£1,381 GBP
$1,850 USD
View
Price last confirmed 12 days ago
Retailer 15
-
£1,448 GBP
$1,940 USD
View
Price last confirmed 12 days ago
Retailer 16
-
£1,471 GBP
SGD 2,664 SGD
View
Price last confirmed 12 days ago
Retailer 17
-
£1,535 GBP
View
Price last confirmed 12 days ago
Most Expensive
Brilliant Earth
12178021A · Oct 21
£3,336 GBP
$4,470 USD
View
Price last confirmed 11 days ago
17 more retailers have this diamond
Prices start from £979 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+
3.56ct Round
£979 GBP