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Round|Lab Grown|IGI

1.77ct G VS1 Round Lab Grown Diamond

ID • G/VS1 • IGI LG821689814

Shape and cutting style on the report: Round brilliant

Certificate IGI LG821689814

Diamond specifications and retailer prices

From £240 GBP
$319 USD
As of October 26, 2026
Save £1,115 GBP (82%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: £1,407 GBP at NZ Jewellers · As of October 7, 2026
View at NZ Jewellers

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 LG821689814 or 821689814. Listed at 11 retailers as of October 26, 2026, with a 465% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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 angle33.7°
Pavilion angle41.2°
OriginLab Grown
Grading LabIGI
CertificateIGI LG821689814
Dimensions7.83 × 7.80 × 4.81 mm
L/W Ratio1.00
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
7.83 mm7.80 mm1.77 ctG / VS1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG821689814
Side View
Table 56.0%Crown 33.7°Girdle: THN-MEDPavilion 41.2°Culet: NoneDepth 61.5%

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: Oct 26
Current: £958 GBP|Low: £240 GBP|High: £2,014 GBP|Avg: £680 GBP
NZ Jewellers
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
October 27, 2026
Retailer 8£240 GBP
Retailer 7£269 GBP
Retailer 11£298 GBP
Retailer 14£322 GBP
Retailer 9£414 GBP
Retailer 13£426 GBP
Retailer 5£461 GBP
Retailer 12£510 GBP
Retailer 2£541 GBP
Retailer 4£725 GBP
Retailer 6£804 GBP
Retailer 3£918 GBP
NZ Jewellers£958 GBP
Retailer 10£1,355 GBP

18 data points across 14 retailers

11 retailers£240 GBP to £1,355 GBP

A
Cheapest Retailer
-
£240 GBP
$319 USD
A
Retailer 2
-
£269 GBP
$358 USD
View
Final sale: no returns
A
Retailer 3
-
£298 GBP
$396 USD
View
A
Retailer 4
-
£353 GBP
$469 USD
View
Price last confirmed 18 days ago
A
Retailer 5
-
£414 GBP
$550 USD
View
A
Retailer 6
-
£510 GBP
ZAR 10,951 ZAR
View
B+
Retailer 7
-
£541 GBP
€684 EUR
View
B+
Retailer 8
-
£725 GBP
$964 USD
View
Price last confirmed 80 days ago
B
Retailer 9
-
£958 GBP
$1,273 USD
View
B
Retailer 10
-
£1,355 GBP
View
Most Expensive
B
NZ Jewellers
b9ceebfb-d210-409c-a1f1-4521d2e658d1 · Oct 7
£1,407 GBP
$1,869 USD
View
Price last confirmed 21 days ago
10 more retailers have this diamond
Prices start from £240 GBPSave up to £1,115 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
£240 GBP