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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 $1,152 NZD
$647 USD
As of October 29, 2026
Save $1,031 NZD (47%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: $3,757 NZD 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
Colour
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
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 29
Current: $3,757 NZD|Low: $919 NZD|High: $5,696 NZD|Avg: $2,209 NZD
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$1,152 NZD
Retailer 10$1,253 NZD
Retailer 9$1,289 NZD
Retailer 7$1,335 NZD
Retailer 6$1,353 NZD
Retailer 2$2,128 NZD
Retailer 8$2,183 NZD
Retailer 4$3,413 NZD
NZ Jewellers$3,757 NZD
Retailer 3$5,635 NZD

43 data points across 10 retailers

11 retailers$1,152 NZD to $2,183 NZD

B+
Cheapest Retailer
-
$1,152 NZD
$647 USD
B
Retailer 2
-
$1,253 NZD
$704 USD
View
B
Retailer 3
-
$1,289 NZD
$724 USD
View
Final sale: no returns
Retailer 4
-
$1,335 NZD
$750 USD
View
Price last confirmed 13 days ago
B
Retailer 5
-
$1,335 NZD
$750 USD
View
B
Retailer 6
-
$1,353 NZD
$760 USD
View
B
Retailer 7
-
$2,128 NZD
£941 GBP
View
B
Retailer 8
-
$2,183 NZD
$1,226 USD
View
Retailer 9
-
$3,413 NZD
$1,917 USD
View
Price under review
Most Expensive
NZ Jewellers
415f9937-45e6-4b2c-89b4-da4c0c4a1a1d · Oct 27
$3,757 NZD
$2,110 USD
View
Price under review
9 more retailers have this diamond
Prices start from $1,152 NZDSave up to $1,031 NZD

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
$1,152 NZD