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Round|Lab Grown|IGI

1.77ct G VS1 Round Lab Grown Diamond

ID • G/VS1 • IGI LG770643926

Shape and cutting style on the report: Round brilliant

Certificate IGI LG770643926

Diamond specifications and retailer prices

From £172 GBP
$231 USD
As of October 29, 2026
Save £955 GBP (85%) vs most expensive(unlock to see where)
23 retailers carry this diamond
Most expensive: £1,127 GBP at Brilliant Earth · As of October 28, 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 G colour (near-colourless) and VS1 clarity (very-slightly-included), with a top-tier cut grade and certified by IGI LG770643926 or 770643926. Listed at 23 retailers as of October 28, 2026, with prices from £172 to £1,127, a £955 spread on the same certified stone. Brilliant Earth lists it at £1,127. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.77
Carat
G
Colour
VS1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33.9°
Pavilion angle40.8°
OriginLab Grown
Grading LabIGI
CertificateIGI LG770643926
Dimensions7.78 × 7.83 × 4.68 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
7.78 mm7.83 mm1.77 ctG / VS1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG770643926
Side View
Table 62.0%Crown 33.9°Girdle: MediumPavilion 40.8°Culet: NoneDepth 60.1%

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: Oct 29
Current: £1,127 GBP|Low: £172 GBP|High: £1,269 GBP|Avg: £505 GBP|-11.2%
Brilliant Earth
Retailer 2
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Retailer 19
October 30, 2026
Retailer 13£172 GBP
Retailer 7£200 GBP
Retailer 6£214 GBP
Retailer 2£334 GBP
Retailer 15£358 GBP
Retailer 19£363 GBP
Retailer 4£367 GBP
Retailer 12£402 GBP
Retailer 14£410 GBP
Retailer 16£450 GBP
Retailer 9£521 GBP
Retailer 11£561 GBP
Retailer 3£683 GBP
Retailer 5£687 GBP
Retailer 8£727 GBP
Retailer 18£870 GBP
Retailer 10£901 GBP
Retailer 17£943 GBP
Brilliant Earth£1,127 GBP

44 data points across 19 retailers

23 retailers£172 GBP to £1,127 GBP

A
Cheapest Retailer
-
£172 GBP
$231 USD
A
Retailer 2
-
£200 GBP
$268 USD
View
A
Retailer 3
-
£214 GBP
$287 USD
View
A
Retailer 4
-
£224 GBP
$300 USD
View
A
Retailer 5
-
£334 GBP
View
A
Retailer 6
-
£358 GBP
€457 EUR
View
B+
Retailer 7
-
£363 GBP
$486 USD
View
A
Retailer 8
-
£367 GBP
ZAR 7,954 ZAR
View
A
Retailer 9
-
£402 GBP
View
A
Retailer 10
-
£410 GBP
$549 USD
View
A
Retailer 11
-
£450 GBP
$603 USD
View
B+
Retailer 12
-
£521 GBP
A$1,074 AUD
View
B+
Retailer 13
-
£561 GBP
$752 USD
View
Retailer 14
-
£656 GBP
$879 USD
View
Price last confirmed 44 days ago
B+
Retailer 15
-
£683 GBP
$915 USD
View
B+
Retailer 16
-
£687 GBP
$921 USD
View
B+
Retailer 17
-
£727 GBP
$974 USD
View
Retailer 18
-
£734 GBP
$984 USD
View
Price last confirmed 95 days ago
B+
Retailer 19
-
£770 GBP
$1,032 USD
View
B
Retailer 20
-
£870 GBP
$1,166 USD
View
Retailer 21
-
£901 GBP
View
Price last confirmed 9 days ago
B
Retailer 22
-
£943 GBP
$1,263 USD
View
Most Expensive
B
Brilliant Earth
18082110A · Oct 28
£1,127 GBP
$1,510 USD
View
22 more retailers have this diamond
Prices start from £172 GBPSave up to £955 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
£172 GBP