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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 $1,534 SGD
$1,200 USD
As of October 30, 2026
Save $3,076 SGD (67%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: $5,137 SGD 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 30, 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
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 30
Current: $5,137 SGD|Low: $1,534 SGD|High: $7,933 SGD|Avg: $3,599 SGD
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$1,534 SGD
Retailer 10$2,362 SGD
Retailer 13$2,571 SGD
Retailer 3$2,645 SGD
Retailer 4$2,741 SGD
Retailer 11$2,741 SGD
Retailer 5$2,953 SGD
Retailer 6$3,762 SGD
Retailer 7$3,768 SGD
Retailer 12$4,298 SGD
Retailer 9$4,610 SGD
NZ Jewellers$5,137 SGD
Retailer 8$7,869 SGD

42 data points across 13 retailers

13 retailers$1,534 SGD to $4,610 SGD

B+
Cheapest Retailer
-
$1,534 SGD
$1,200 USD
B
Retailer 2
-
$2,362 SGD
$1,848 USD
View
B
Retailer 3
-
$2,571 SGD
$2,011 USD
View
B
Retailer 4
-
$2,645 SGD
$2,069 USD
View
Final sale: no returns
B
Retailer 5
-
$2,741 SGD
$2,144 USD
View
Retailer 6
-
$2,741 SGD
$2,144 USD
View
Price last confirmed 19 days ago
B
Retailer 7
-
$2,953 SGD
$2,310 USD
View
B
Retailer 8
-
$3,762 SGD
£2,317 GBP
View
B
Retailer 9
-
$3,768 SGD
£2,321 GBP
View
B
Retailer 10
-
$4,298 SGD
$3,362 USD
View
B
Retailer 11
-
$4,610 SGD
$3,606 USD
View
Most Expensive
NZ Jewellers
fbb6ffee-9e31-440c-8e9e-aa63170fdef1 · Oct 28
$5,137 SGD
$4,018 USD
View
Price under review
11 more retailers have this diamond
Prices start from $1,534 SGDSave up to $3,076 SGD

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
$1,534 SGD