CaratHunter
Plans
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 $150 USD
As of October 29, 2026
Save $722 USD (83%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: $872 USD 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 $150 to $872, a $722 spread on the same certified stone. MOH London lists it at $872. 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: $872 USD|Low: $144 USD|High: $881 USD|Avg: $431 USD
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
October 30, 2026
Retailer 4$150 USD
Retailer 8$174 USD
Retailer 5$186 USD
Retailer 6$342 USD
Retailer 2$416 USD
Retailer 7$505 USD
Retailer 9$565 USD
Retailer 3$633 USD
MOH London$872 USD

39 data points across 9 retailers

10 retailers$150 USD to $872 USD

B+
Cheapest Retailer
-
$150 USD
B+
Retailer 2
-
$174 USD
View
B+
Retailer 3
-
$186 USD
View
B+
Retailer 4
-
$186 USD
View
B
Retailer 5
-
$342 USD
View
B
Retailer 6
-
$416 USD
£328 GBP
View
B
Retailer 7
-
$505 USD
View
C
Retailer 8
-
$599 USD
View
C
Retailer 9
-
$633 USD
View
Most Expensive
C
MOH London
LG811646377 · Oct 26
$872 USD
£687 GBP
View
9 more retailers have this diamond
Prices start from $150 USDSave up to $722 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.

B+
1.00ct Round
$150 USD