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Round|Lab Grown|IGI

1.00ct G SI1 Round Lab Grown Diamond

FR • G/SI1 • IGI LG811646377

Shape and cutting style on the report: Round brilliant

Certificate IGI LG811646377

Diamond specifications and retailer prices

From €134 EUR
$150 USD
As of October 29, 2026
Save €647 EUR (83%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: €781 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 G colour (near-colourless) and SI1 clarity (slightly-included), with a standard cut grade and certified by IGI LG811646377 or 811646377. Listed at 10 retailers as of October 26, 2026, with prices from €134 to €781, a €647 spread on the same certified stone. MOH London lists it at €781. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

1.00
Carat
G
Color
SI1
Clarity
Fair
Cut

Specifications

CutFair
PolishVery Good
SymmetryVery Good
FluorescenceNone
Crown angle34.4°
Pavilion angle38.5°
OriginLab Grown
Grading LabIGI
CertificateIGI LG811646377
Dimensions6.43 × 6.36 × 3.76 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizeNone
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
6.43 mm6.36 mm1.00 ctG / SI1
OriginLab Grown
CutFair
PolishVery Good
SymmetryVery Good
FluorescenceNone
CertificateIGI LG811646377
Side View
Table 60.0%Crown 34.4°Girdle: STK-THKPavilion 38.5°Culet: NoneDepth 58.7%

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: €781 EUR|Low: €129 EUR|High: €789 EUR|Avg: €386 EUR
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
October 30, 2026
Retailer 4€134 EUR
Retailer 8€156 EUR
Retailer 5€166 EUR
Retailer 6€306 EUR
Retailer 2€373 EUR
Retailer 7€452 EUR
Retailer 9€506 EUR
Retailer 3€567 EUR
MOH London€781 EUR

39 data points across 9 retailers

10 retailers€134 EUR to €781 EUR

B+
Cheapest Retailer
-
€134 EUR
$150 USD
B+
Retailer 2
-
€156 EUR
$174 USD
View
B+
Retailer 3
-
€166 EUR
$186 USD
View
B+
Retailer 4
-
€166 EUR
$186 USD
View
B
Retailer 5
-
€306 EUR
$342 USD
View
B
Retailer 6
-
€373 EUR
£328 GBP
View
B
Retailer 7
-
€452 EUR
$505 USD
View
C
Retailer 8
-
€536 EUR
$599 USD
View
C
Retailer 9
-
€567 EUR
$633 USD
View
Most Expensive
C
MOH London
LG811646377 · Oct 26
€781 EUR
£687 GBP
View
9 more retailers have this diamond
Prices start from €134 EURSave up to €647 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.

B+
1.00ct Round
€134 EUR