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Oval|Lab Grown|IGI

1.00ct J SI2 Oval Lab Grown Diamond

VG • J/SI2 • IGI LG450027318

Shape and cutting style on the report: Oval brilliant

Certificate IGI LG450027318

Diamond specifications and retailer prices

From $1,285 SGD
As of November 4, 2026
Save $279 SGD (18%) vs most expensive(unlock to see where)
5 retailers carry this diamond
Most expensive: $2,555 SGD at MOH London · As of October 26, 2026
View at MOH London

About this 1ct lab-grown oval diamond

This 1ct lab-grown oval sits in the classic one-carat band, graded J colour (near-colourless) and SI2 clarity (slightly-included), with a very-good cut grade and certified by IGI LG450027318 or 450027318. Listed at 5 retailers as of November 4, 2026, with a relatively tight 22% spread, which is unusual at this carat range and suggests competitive pricing across the listings. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

1.00
Carat
J
Colour
SI2
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishVery Good
SymmetryGood
FluorescenceFaint
Crown angle39.8°
Pavilion angle41.7°
OriginLab Grown
Grading LabIGI
CertificateIGI LG450027318
Dimensions7.51 × 5.28 × 3.78 mm
L/W Ratio1.42
Girdle conditionFaceted
Culet sizePointed
Cert comments
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Top View
7.51 mm5.28 mm1.00 ctJ / SI2
OriginLab Grown
CutVery Good
PolishVery Good
SymmetryGood
FluorescenceFaint
CertificateIGI LG450027318
Side View
Table 56.5%Crown 39.8°Girdle: THK-VTKPavilion 41.7°Culet: NoneDepth 71.6%

Caratlytics Score

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B
Good
Decent quality, room for better deals
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 4
Current: $2,555 SGD|Low: $925 SGD|High: $2,583 SGD|Avg: $1,665 SGD|-0.1%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
October 26, 2026
Retailer 9$925 SGD
Retailer 3$1,285 SGD
Retailer 4$1,335 SGD
Retailer 5$1,540 SGD
Retailer 7$1,565 SGD
Retailer 8$1,657 SGD
Retailer 2$1,942 SGD
Retailer 6$2,307 SGD
MOH London$2,555 SGD

14 data points across 9 retailers

5 retailers$1,285 SGD to $1,565 SGD

B
Cheapest Retailer
-
$1,285 SGD
Final sale: no returns
B
Retailer 2
-
$1,335 SGD
View
C
Retailer 3
-
$1,565 SGD
View
Retailer 4
-
$2,307 SGD
View
Price last confirmed 24 days ago
Most Expensive
MOH London
DD08C7E5F · Oct 26
$2,555 SGD
£1,570 GBP
View
Price last confirmed 11 days ago
4 more retailers have this diamond
Prices start from $1,285 SGDSave up to $279 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
1.00ct Oval
$1,285 SGD