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Round|Lab Grown|IGI

1.00ct E SI1 Round Lab Grown Diamond

ID • E/SI1 • IGI LG763629218

Shape and cutting style on the report: Round brilliant

Certificate IGI LG763629218

Diamond specifications and retailer prices

From $280 NZD
$158 USD
As of October 29, 2026
Save $1,739 NZD (86%) vs most expensive(unlock to see where)
22 retailers carry this diamond
Most expensive: $2,019 NZD at Helzberg Diamonds · As of October 29, 2026
View at Helzberg Diamonds

About this 1ct lab-grown round diamond

This 1ct lab-grown round 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 LG763629218 or 763629218. Listed at 22 retailers as of October 29, 2026, with prices from $280 to $2,019, a $1,739 spread on the same certified stone. Helzberg Diamonds lists it at $2,019. 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
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33°
Pavilion angle41.5°
OriginLab Grown
Grading LabIGI
CertificateIGI LG763629218
Dimensions6.43 × 6.39 × 3.98 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
6.43 mm6.39 mm1.00 ctE / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG763629218
Side View
Table 57.0%Crown 33°Girdle: MED-STKPavilion 41.5°Culet: NoneDepth 62.0%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 29
Current: $2,019 NZD|Low: $266 NZD|High: $2,019 NZD|Avg: $834 NZD
Helzberg Diamonds
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Retailer 14
Retailer 15
Retailer 16
October 31, 2026
Retailer 7$280 NZD
Retailer 10$314 NZD
Retailer 5$346 NZD
Retailer 16$346 NZD
Retailer 11$607 NZD
Retailer 3$630 NZD
Retailer 13$676 NZD
Retailer 9$678 NZD
Retailer 15$777 NZD
Retailer 2$851 NZD
Retailer 14$946 NZD
Retailer 8$1,114 NZD
Retailer 6$1,213 NZD
Retailer 12$1,631 NZD
Retailer 4$1,878 NZD
Helzberg Diamonds$2,019 NZD

44 data points across 16 retailers

22 retailers$280 NZD to $2,019 NZD

A
Cheapest Retailer
-
$280 NZD
$158 USD
A
Retailer 2
-
$314 NZD
$177 USD
View
Final sale: no returns
A
Retailer 3
-
$325 NZD
$183 USD
View
A
Retailer 4
-
$346 NZD
$195 USD
View
A
Retailer 5
-
$346 NZD
$195 USD
View
A
Retailer 6
-
$486 NZD
$274 USD
View
B+
Retailer 7
-
$607 NZD
£270 GBP
View
B+
Retailer 8
-
$630 NZD
$355 USD
View
B+
Retailer 9
-
$676 NZD
€363 EUR
View
B+
Retailer 10
-
$678 NZD
£301 GBP
View
Retailer 11
-
$718 NZD
$405 USD
View
Price last confirmed 88 days ago
B+
Retailer 12
-
$777 NZD
$438 USD
View
Retailer 13
-
$816 NZD
$460 USD
View
Price last confirmed 14 days ago
B+
Retailer 14
-
$851 NZD
A$738 AUD
View
B
Retailer 15
-
$946 NZD
$533 USD
View
Retailer 16
-
$1,105 NZD
$623 USD
View
Price last confirmed 40 days ago
B
Retailer 17
-
$1,114 NZD
$628 USD
View
Retailer 18
-
$1,178 NZD
$664 USD
View
Price last confirmed 14 days ago
B
Retailer 19
-
$1,213 NZD
$683 USD
View
B
Retailer 20
-
$1,631 NZD
£724 GBP
View
B
Retailer 21
-
$1,878 NZD
$1,058 USD
View
Most Expensive
B
Helzberg Diamonds
ZXZNMJMIPIHO · Oct 29
$2,019 NZD
$1,138 USD
View
21 more retailers have this diamond
Prices start from $280 NZDSave up to $1,739 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.

A
1.00ct Round
$280 NZD