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Round|Lab Grown|IGI

2.05ct F SI1 Round Lab Grown Diamond

ID • F/SI1 • IGI LG617489637

Shape and cutting style on the report: Round brilliant

Certificate IGI LG617489637

Diamond specifications and retailer prices

From £175 GBP
$235 USD
As of November 1, 2026
Save £590 GBP (77%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: £1,231 GBP at Brilliant Earth · As of October 16, 2026
View at Brilliant Earth

About this 2.05ct lab-grown round diamond

This 2.05ct lab-grown round sits in the two to three carat band, graded F colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG617489637 or 617489637. Listed at 15 retailers as of November 1, 2026, with a 336% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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

2.05
Carat
F
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.2°
Pavilion angle40.5°
OriginLab Grown
Grading LabIGI
CertificateIGI LG617489637
Dimensions8.16 × 8.13 × 5.00 mm
L/W Ratio1.00
Girdle conditionFaceted
Culet sizePointed
Top View
8.16 mm8.13 mm2.05 ctF / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG617489637
Side View
Table 57.0%Crown 35.2°Girdle: MediumPavilion 40.5°Culet: NoneDepth 61.4%

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: Nov 1
Current: £1,231 GBP|Low: £175 GBP|High: £1,396 GBP|Avg: £493 GBP|-11.8%
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
November 1, 2026
Retailer 3£175 GBP
Retailer 10£204 GBP
Retailer 14£218 GBP
Retailer 15£218 GBP
Retailer 13£359 GBP
Retailer 5£368 GBP
Retailer 9£382 GBP
Retailer 8£410 GBP
Retailer 7£425 GBP
Retailer 6£478 GBP
Retailer 4£699 GBP
Retailer 12£702 GBP
Retailer 2£765 GBP
Retailer 11£877 GBP
Brilliant Earth£1,231 GBP

38 data points across 15 retailers

15 retailers£175 GBP to £765 GBP

A
Cheapest Retailer
-
£175 GBP
$235 USD
A
Retailer 2
-
£204 GBP
$273 USD
View
A
Retailer 3
-
£218 GBP
$292 USD
View
Retailer 4
-
£218 GBP
$292 USD
View
Price last confirmed 7 days ago
Retailer 5
-
£359 GBP
View
Price last confirmed 15 days ago
B+
Retailer 6
-
£368 GBP
$493 USD
View
A
Retailer 7
-
£382 GBP
€488 EUR
View
A
Retailer 8
-
£410 GBP
View
A
Retailer 9
-
£425 GBP
$569 USD
View
B+
Retailer 10
-
£478 GBP
$640 USD
View
B+
Retailer 11
-
£699 GBP
$937 USD
View
B
Retailer 12
-
£702 GBP
$941 USD
View
B+
Retailer 13
-
£765 GBP
$1,025 USD
View
Retailer 14
-
£877 GBP
View
Price last confirmed 11 days ago
Most Expensive
Brilliant Earth
8988852A · Oct 16
£1,231 GBP
$1,650 USD
View
Price last confirmed 16 days ago
14 more retailers have this diamond
Prices start from £175 GBPSave up to £590 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
2.05ct Round
£175 GBP