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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 €141 EUR
$158 USD
As of October 29, 2026
Save €877 EUR (86%) vs most expensive(unlock to see where)
22 retailers carry this diamond
Most expensive: €1,019 EUR 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 €141 to €1,019, a €877 spread on the same certified stone. Helzberg Diamonds lists it at €1,019. 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: €1,019 EUR|Low: €134 EUR|High: €1,019 EUR|Avg: €419 EUR
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 30, 2026
Retailer 7€141 EUR
Retailer 9€158 EUR
Retailer 5€175 EUR
Retailer 16€175 EUR
Retailer 10€306 EUR
Retailer 3€318 EUR
Retailer 12€341 EUR
Retailer 2€342 EUR
Retailer 15€392 EUR
Retailer 14€429 EUR
Retailer 13€477 EUR
Retailer 8€562 EUR
Retailer 6€612 EUR
Retailer 11€823 EUR
Retailer 4€947 EUR
Helzberg Diamonds€1,019 EUR

43 data points across 16 retailers

22 retailers€141 EUR to €1,019 EUR

A
Cheapest Retailer
-
€141 EUR
$158 USD
A
Retailer 2
-
€158 EUR
$177 USD
View
Final sale: no returns
A
Retailer 3
-
€164 EUR
$183 USD
View
A
Retailer 4
-
€175 EUR
$195 USD
View
A
Retailer 5
-
€175 EUR
$195 USD
View
A
Retailer 6
-
€245 EUR
$274 USD
View
B+
Retailer 7
-
€306 EUR
£270 GBP
View
B+
Retailer 8
-
€318 EUR
$355 USD
View
B+
Retailer 9
-
€341 EUR
View
B+
Retailer 10
-
€342 EUR
£301 GBP
View
Retailer 11
-
€362 EUR
$405 USD
View
Price last confirmed 88 days ago
B+
Retailer 12
-
€392 EUR
$438 USD
View
Retailer 13
-
€412 EUR
$460 USD
View
Price last confirmed 14 days ago
B+
Retailer 14
-
€429 EUR
A$738 AUD
View
B
Retailer 15
-
€477 EUR
$533 USD
View
Retailer 16
-
€558 EUR
$623 USD
View
Price last confirmed 39 days ago
B
Retailer 17
-
€562 EUR
$628 USD
View
Retailer 18
-
€594 EUR
$664 USD
View
Price last confirmed 14 days ago
B
Retailer 19
-
€612 EUR
$683 USD
View
B
Retailer 20
-
€823 EUR
£724 GBP
View
B
Retailer 21
-
€947 EUR
$1,058 USD
View
Most Expensive
B
Helzberg Diamonds
ZXZNMJMIPIHO · Oct 29
€1,019 EUR
$1,138 USD
View
21 more retailers have this diamond
Prices start from €141 EURSave up to €877 EUR

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
€141 EUR