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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 $1,200 USD
As of October 30, 2026
Save $2,406 USD (67%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: $4,018 USD at NZ Jewellers · As of October 28, 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 26, 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
Color
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 30
Current: $4,018 USD|Low: $1,200 USD|High: $6,205 USD|Avg: $2,809 USD
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 30, 2026
Retailer 2$1,200 USD
Retailer 10$1,848 USD
Retailer 13$2,011 USD
Retailer 3$2,069 USD
Retailer 4$2,144 USD
Retailer 11$2,144 USD
Retailer 5$2,310 USD
Retailer 6$2,942 USD
Retailer 7$2,947 USD
Retailer 12$3,362 USD
Retailer 9$3,606 USD
NZ Jewellers$4,018 USD
Retailer 8$6,156 USD

43 data points across 13 retailers

13 retailers$1,200 USD to $3,606 USD

B+
Cheapest Retailer
-
$1,200 USD
B
Retailer 2
-
$1,848 USD
View
B
Retailer 3
-
$2,011 USD
View
B
Retailer 4
-
$2,069 USD
View
Final sale: no returns
B
Retailer 5
-
$2,144 USD
View
Retailer 6
-
$2,144 USD
View
Price last confirmed 18 days ago
B
Retailer 7
-
$2,310 USD
View
B
Retailer 8
-
$2,942 USD
£2,317 GBP
View
B
Retailer 9
-
$2,947 USD
£2,321 GBP
View
B
Retailer 10
-
$3,362 USD
View
B
Retailer 11
-
$3,606 USD
View
Most Expensive
NZ Jewellers
fbb6ffee-9e31-440c-8e9e-aa63170fdef1 · Oct 28
$4,018 USD
View
Price under review
11 more retailers have this diamond
Prices start from $1,200 USDSave up to $2,406 USD

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
$1,200 USD