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Round|Lab Grown|IGI

1.77ct F SI1 Round Lab Grown Diamond

EX • F/SI1 • IGI LG723542201

Shape and cutting style on the report: Round brilliant

Certificate IGI LG723542201

Diamond specifications and retailer prices

From £162 GBP
$217 USD
As of November 1, 2026
Save £890 GBP (85%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: £1,052 GBP at Brilliant Earth · As of November 1, 2026
View at Brilliant Earth

About this 1.77ct lab-grown round diamond

This 1.77ct lab-grown round sits in the one-and-a-half to two carat band, graded F colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG723542201 or 723542201. Listed at 19 retailers as of November 1, 2026, with prices from £162 to £1,052, a £890 spread on the same certified stone. Brilliant Earth lists it at £1,052. 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

1.77
Carat
F
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle32.4°
Pavilion angle40.3°
OriginLab Grown
Grading LabIGI
CertificateIGI LG723542201
Dimensions7.97 × 7.92 × 4.65 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
7.97 mm7.92 mm1.77 ctF / SI1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG723542201
Side View
Table 59.0%Crown 32.4°Girdle: MediumPavilion 40.3°Culet: NoneDepth 58.5%

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: £1,052 GBP|Low: £162 GBP|High: £1,314 GBP|Avg: £495 GBP|-19.9%
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
November 1, 2026
Retailer 12£162 GBP
Retailer 13£201 GBP
Retailer 3£343 GBP
Retailer 6£368 GBP
Retailer 7£371 GBP
Retailer 8£371 GBP
Retailer 5£398 GBP
Retailer 9£416 GBP
Retailer 4£418 GBP
Retailer 10£634 GBP
Retailer 11£646 GBP
Retailer 2£803 GBP
Brilliant Earth£1,052 GBP

43 data points across 13 retailers

19 retailers£162 GBP to £1,052 GBP

A
Cheapest Retailer
-
£162 GBP
$217 USD
Retailer 2
-
£162 GBP
$217 USD
View
Price last confirmed 40 days ago
Retailer 3
-
£187 GBP
$251 USD
View
Price last confirmed 40 days ago
Retailer 4
-
£198 GBP
$265 USD
View
Price last confirmed 41 days ago
A
Retailer 5
-
£201 GBP
$269 USD
View
Retailer 6
-
£201 GBP
$269 USD
View
Price last confirmed 7 days ago
B+
Retailer 7
-
£343 GBP
$459 USD
View
A
Retailer 8
-
£368 GBP
View
A
Retailer 9
-
£371 GBP
View
A
Retailer 10
-
£371 GBP
€474 EUR
View
A
Retailer 11
-
£398 GBP
$533 USD
View
A
Retailer 12
-
£416 GBP
A$858 AUD
View
A
Retailer 13
-
£418 GBP
$560 USD
View
B+
Retailer 14
-
£634 GBP
$850 USD
View
Retailer 15
-
£644 GBP
$863 USD
View
Price last confirmed 41 days ago
B
Retailer 16
-
£644 GBP
$863 USD
View
B
Retailer 17
-
£646 GBP
$866 USD
View
B
Retailer 18
-
£803 GBP
View
Most Expensive
B
Brilliant Earth
15627443A · Nov 1
£1,052 GBP
$1,410 USD
View
18 more retailers have this diamond
Prices start from £162 GBPSave up to £890 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
1.77ct Round
£162 GBP