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Round|Lab Grown|IGI

1.00ct D SI2 Round Lab Grown Diamond

EX • D/SI2 • IGI LG816641818

Shape and cutting style on the report: Round brilliant

Certificate IGI LG816641818

Diamond specifications and retailer prices

From €229 EUR
£201 GBP
As of October 30, 2026
Save €928 EUR (80%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: €1,157 EUR at MOH London · As of October 26, 2026
View at MOH London

About this 1ct lab-grown round diamond

This 1ct lab-grown round sits in the classic one-carat band, graded D colour (colourless) and SI2 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG816641818 or 816641818. Listed at 14 retailers as of October 26, 2026, with prices from €229 to €1,157, a €928 spread on the same certified stone. MOH London lists it at €1,157. 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
D
Colour
SI2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
Crown angle34.1°
Pavilion angle40.2°
OriginLab Grown
Grading LabIGI
CertificateIGI LG816641818
Dimensions6.45 × 6.42 × 3.86 mm
L/W Ratio1.00
Girdle conditionFaceted
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 mm6.42 mm1.00 ctD / SI2
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateIGI LG816641818
Side View
Table 62.0%Crown 34.1°Girdle: MED-STKPavilion 40.2°Culet: NoneDepth 59.9%

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 30
Current: €1,157 EUR|Low: €72 EUR|High: €1,170 EUR|Avg: €356 EUR|+0.2%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
October 30, 2026
Retailer 9€72 EUR
Retailer 8€148 EUR
Retailer 2€229 EUR
Retailer 3€263 EUR
Retailer 5€266 EUR
Retailer 7€292 EUR
Retailer 6€427 EUR
Retailer 4€470 EUR
MOH London€1,157 EUR

41 data points across 9 retailers

14 retailers€229 EUR to €1,157 EUR

Retailer 1
-
€107 EUR
$120 USD
Price last confirmed 23 days ago
Retailer 2
-
€112 EUR
$125 USD
View
Price last confirmed 32 days ago
Retailer 3
-
€130 EUR
$145 USD
View
Price last confirmed 25 days ago
Retailer 4
-
€130 EUR
$145 USD
View
Price last confirmed 44 days ago
Retailer 5
-
€147 EUR
$164 USD
View
Price last confirmed 32 days ago
Retailer 6
-
€148 EUR
$165 USD
View
Price last confirmed 23 days ago
A
Retailer 7
-
€229 EUR
£201 GBP
View
B+
Retailer 8
-
€263 EUR
View
B+
Retailer 9
-
€266 EUR
$297 USD
View
B+
Retailer 10
-
€292 EUR
$326 USD
View
B+
Retailer 11
-
€427 EUR
$477 USD
View
Retailer 12
-
€445 EUR
$497 USD
View
Price last confirmed 31 days ago
B
Retailer 13
-
€470 EUR
$525 USD
View
Most Expensive
B
MOH London
LG816641818 · Oct 26
€1,157 EUR
£1,018 GBP
View
13 more retailers have this diamond
Prices start from €229 EURSave up to €928 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
€229 EUR