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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 $158 USD
As of October 29, 2026
Save $980 USD (86%) vs most expensive(unlock to see where)
22 retailers carry this diamond
Most expensive: $1,138 USD 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 $158 to $1,138, a $980 spread on the same certified stone. Helzberg Diamonds lists it at $1,138. 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 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: $1,138 USD|Low: $150 USD|High: $1,138 USD|Avg: $467 USD
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 29, 2026
Retailer 7$158 USD
Retailer 5$176 USD
Retailer 4$195 USD
Retailer 15$195 USD
Retailer 2$341 USD
Retailer 16$355 USD
Retailer 11$381 USD
Retailer 9$383 USD
Retailer 14$438 USD
Retailer 13$480 USD
Retailer 12$533 USD
Retailer 8$628 USD
Retailer 6$683 USD
Retailer 10$919 USD
Retailer 3$1,058 USD
Helzberg Diamonds$1,138 USD

45 data points across 16 retailers

22 retailers$158 USD to $1,138 USD

A
Cheapest Retailer
-
$158 USD
A
Retailer 2
-
$176 USD
View
Final sale: no returns
A
Retailer 3
-
$183 USD
View
A
Retailer 4
-
$195 USD
View
A
Retailer 5
-
$195 USD
View
A
Retailer 6
-
$274 USD
View
B+
Retailer 7
-
$341 USD
£269 GBP
View
B+
Retailer 8
-
$355 USD
View
B+
Retailer 9
-
$381 USD
€363 EUR
View
B+
Retailer 10
-
$383 USD
£302 GBP
View
Retailer 11
-
$405 USD
View
Price last confirmed 87 days ago
B+
Retailer 12
-
$438 USD
View
Retailer 13
-
$460 USD
View
Price last confirmed 13 days ago
B+
Retailer 14
-
$480 USD
A$738 AUD
View
B
Retailer 15
-
$533 USD
View
Retailer 16
-
$623 USD
View
Price last confirmed 39 days ago
B
Retailer 17
-
$628 USD
View
Retailer 18
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$664 USD
View
Price last confirmed 13 days ago
B
Retailer 19
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$683 USD
View
B
Retailer 20
-
$919 USD
£724 GBP
View
B
Retailer 21
-
$1,058 USD
View
Most Expensive
B
Helzberg Diamonds
ZXZNMJMIPIHO · Oct 29
$1,138 USD
View
21 more retailers have this diamond
Prices start from $158 USDSave up to $980 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.

A
1.00ct Round
$158 USD