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Oval|Lab Grown|IGI

1.80ct G SI1 Oval Lab Grown Diamond

ID • G/SI1 • IGI LG497155977

Shape and cutting style on the report: Oval brilliant

Certificate IGI LG497155977

Diamond specifications and retailer prices

From £896 GBP
$1,200 USD
As of October 31, 2026
Save £1,796 GBP (67%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: £2,999 GBP at NZ Jewellers · As of October 31, 2026
View at NZ Jewellers

About this 1.8ct lab-grown oval diamond

This 1.8ct lab-grown oval sits in the one-and-a-half to two carat band, graded G colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG497155977 or 497155977. Listed at 13 retailers as of October 31, 2026, with a 201% 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

1.80
Carat
G
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33.7°
Pavilion angle41.6°
OriginLab Grown
Grading LabIGI
CertificateIGI LG497155977
Dimensions9.67 × 6.83 × 4.25 mm
L/W Ratio1.42
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
9.67 mm6.83 mm1.80 ctG / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG497155977
Side View
Table 58.5%Crown 33.7°Girdle: MED-VTKPavilion 41.6°Culet: NoneDepth 62.2%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 31
Current: £2,999 GBP|Low: £896 GBP|High: £4,631 GBP|Avg: £2,108 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
October 31, 2026
Retailer 6£896 GBP
Retailer 10£1,379 GBP
Retailer 13£1,501 GBP
Retailer 3£1,544 GBP
Retailer 4£1,600 GBP
Retailer 11£1,600 GBP
Retailer 5£1,724 GBP
Retailer 2£2,182 GBP
Retailer 7£2,196 GBP
Retailer 12£2,509 GBP
Retailer 9£2,691 GBP
NZ Jewellers£2,999 GBP
Retailer 8£4,594 GBP

42 data points across 13 retailers

13 retailers£896 GBP to £2,691 GBP

B+
Cheapest Retailer
-
£896 GBP
$1,200 USD
B
Retailer 2
-
£1,379 GBP
$1,848 USD
View
B
Retailer 3
-
£1,501 GBP
$2,011 USD
View
B
Retailer 4
-
£1,544 GBP
$2,069 USD
View
Final sale: no returns
B
Retailer 5
-
£1,600 GBP
$2,144 USD
View
Retailer 6
-
£1,600 GBP
$2,144 USD
View
Price last confirmed 19 days ago
B
Retailer 7
-
£1,724 GBP
$2,310 USD
View
B
Retailer 8
-
£2,182 GBP
View
B
Retailer 9
-
£2,196 GBP
View
B
Retailer 10
-
£2,509 GBP
$3,362 USD
View
B
Retailer 11
-
£2,691 GBP
$3,606 USD
View
Most Expensive
NZ Jewellers
fbb6ffee-9e31-440c-8e9e-aa63170fdef1 · Oct 31
£2,999 GBP
$4,018 USD
View
Price under review
11 more retailers have this diamond
Prices start from £896 GBPSave up to £1,796 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+
1.80ct Oval
£896 GBP