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Oval|Lab Grown|IGI

1.80ct G SI1 Oval Lab Grown Diamond

ID • G/SI1 • IGI LG508138482

Shape and cutting style on the report: Oval brilliant

Certificate IGI LG508138482

Diamond specifications and retailer prices

From $1,509 SGD
$1,180 USD
As of October 30, 2026
Save $3,101 SGD (67%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: $5,137 SGD 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 LG508138482 or 508138482. Listed at 12 retailers as of October 30, 2026, with a 206% 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 angle34.2°
Pavilion angle41.2°
OriginLab Grown
Grading LabIGI
CertificateIGI LG508138482
Dimensions9.50 × 6.94 × 4.29 mm
L/W Ratio1.37
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
9.50 mm6.94 mm1.80 ctG / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG508138482
Side View
Table 64.0%Crown 34.2°Girdle: THN-STKPavilion 41.2°Culet: NoneDepth 61.8%

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: $3,737 SGD|Low: $1,509 SGD|High: $7,933 SGD|Avg: $3,652 SGD|-0.7%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
October 31, 2026
Retailer 2$1,509 SGD
Retailer 5$2,362 SGD
Retailer 8$2,645 SGD
Retailer 6$2,741 SGD
Retailer 9$2,953 SGD
Retailer 1$3,737 SGD
Retailer 7$4,298 SGD
Retailer 4$4,610 SGD
Retailer 3$7,869 SGD

42 data points across 9 retailers

12 retailers$1,509 SGD to $4,610 SGD

B+
Cheapest Retailer
-
$1,509 SGD
$1,180 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
Retailer 5
-
$2,741 SGD
$2,144 USD
View
Price last confirmed 19 days ago
B
Retailer 6
-
$2,741 SGD
$2,144 USD
View
B
Retailer 7
-
$2,953 SGD
$2,310 USD
View
B
Retailer 8
-
$3,737 SGD
£2,302 GBP
View
B
Retailer 9
-
$4,298 SGD
$3,362 USD
View
B
Retailer 10
-
$4,610 SGD
$3,606 USD
View
Most Expensive
NZ Jewellers
5e0cc16e-8945-4cca-b726-f41097540ed9 · Oct 31
$5,137 SGD
$4,018 USD
View
Price under review
10 more retailers have this diamond
Prices start from $1,509 SGDSave up to $3,101 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
$1,509 SGD