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Round|Lab Grown|IGI

1.00ct E SI2 Round Lab Grown Diamond

ID • E/SI2 • IGI LG472170717

Shape and cutting style on the report: Round brilliant

Certificate IGI LG472170717

Diamond specifications and retailer prices

From $647 USD
As of October 29, 2026
Save $579 USD (47%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: $2,110 USD at NZ Jewellers · As of October 27, 2026
View at NZ Jewellers

About this 1ct lab-grown round diamond

This 1ct lab-grown round sits in the classic one-carat band, graded E colour (colourless) and SI2 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG472170717 or 472170717. Listed at 11 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
SI2
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34°
Pavilion angle40.4°
OriginLab Grown
Grading LabIGI
CertificateIGI LG472170717
Dimensions6.45 × 6.43 × 3.88 mm
L/W Ratio1.00
Girdle conditionFaceted
Culet sizePointed
Cert comments
As Grown - No indication of post-growth treatment This Laboratory Grown Diamond was created by High Pressure High Temperature (HPHT) growth process Type II
Top View
6.45 mm6.43 mm1.00 ctE / SI2
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG472170717
Side View
Table 58.5%Crown 34°Girdle: MED-STKPavilion 40.4°Culet: NoneDepth 60.2%

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 29
Current: $2,110 USD|Low: $516 USD|High: $3,199 USD|Avg: $1,241 USD
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
October 30, 2026
Retailer 5$647 USD
Retailer 10$704 USD
Retailer 9$724 USD
Retailer 7$750 USD
Retailer 6$760 USD
Retailer 2$1,195 USD
Retailer 8$1,226 USD
Retailer 4$1,917 USD
NZ Jewellers$2,110 USD
Retailer 3$3,165 USD

43 data points across 10 retailers

11 retailers$647 USD to $1,226 USD

B+
Cheapest Retailer
-
$647 USD
B
Retailer 2
-
$704 USD
View
B
Retailer 3
-
$724 USD
View
Final sale: no returns
Retailer 4
-
$750 USD
View
Price last confirmed 13 days ago
B
Retailer 5
-
$750 USD
View
B
Retailer 6
-
$760 USD
View
B
Retailer 7
-
$1,195 USD
£941 GBP
View
B
Retailer 8
-
$1,226 USD
View
Retailer 9
-
$1,917 USD
View
Price under review
Most Expensive
NZ Jewellers
415f9937-45e6-4b2c-89b4-da4c0c4a1a1d · Oct 27
$2,110 USD
View
Price under review
9 more retailers have this diamond
Prices start from $647 USDSave up to $579 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 Round
$647 USD