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Oval|Lab Grown|IGI

1.00ct E SI1 Oval Lab Grown Diamond

ID • E/SI1 • IGI LG497145121

Shape and cutting style on the report: Oval brilliant

Certificate IGI LG497145121

Diamond specifications and retailer prices

From $677 USD
As of October 29, 2026
Save $602 USD (47%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: $2,208 USD at NZ Jewellers · As of October 28, 2026
View at NZ Jewellers

About this 1ct lab-grown oval diamond

This 1ct lab-grown oval sits in the classic one-carat band, graded E colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG497145121 or 497145121. Listed at 12 retailers as of October 28, 2026, with a 89% 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

1.00
Carat
E
Color
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.6°
Pavilion angle40.4°
OriginLab Grown
Grading LabIGI
CertificateIGI LG497145121
Dimensions8.14 × 5.60 × 3.49 mm
L/W Ratio1.45
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
8.14 mm5.60 mm1.00 ctE / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG497145121
Side View
Table 55.0%Crown 34.6°Girdle: MED-STKPavilion 40.4°Culet: NoneDepth 62.3%

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 29
Current: $1,253 USD|Low: $495 USD|High: $3,353 USD|Avg: $1,135 USD|+1.6%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
October 29, 2026
Retailer 3$495 USD
Retailer 7$677 USD
Retailer 11$757 USD
Retailer 2$785 USD
Retailer 9$785 USD
Retailer 8$910 USD
Retailer 5$965 USD
Retailer 1$1,253 USD
Retailer 10$1,279 USD
Retailer 6$2,006 USD
Retailer 4$3,326 USD

42 data points across 11 retailers

12 retailers$677 USD to $1,279 USD

B+
Cheapest Retailer
-
$677 USD
B
Retailer 2
-
$737 USD
View
B
Retailer 3
-
$757 USD
View
Final sale: no returns
B
Retailer 4
-
$785 USD
View
Price last confirmed 13 days ago
B
Retailer 5
-
$785 USD
View
B
Retailer 6
-
$910 USD
View
B
Retailer 7
-
$965 USD
View
B
Retailer 8
-
$1,253 USD
£987 GBP
View
B
Retailer 9
-
$1,279 USD
View
B
Retailer 10
-
$2,006 USD
View
Price under review
Most Expensive
B
NZ Jewellers
a138cbf6-82d7-4729-9991-1ca35600ba41 · Oct 28
$2,208 USD
View
Price under review
10 more retailers have this diamond
Prices start from $677 USDSave up to $602 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+
1.00ct Oval
$677 USD