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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 $266 NZD
$150 USD
As of November 1, 2026
Save $1,282 NZD (83%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: $1,548 NZD 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 $266 to $1,548, a $1,282 spread on the same certified stone. MOH London lists it at $1,548. 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
Colour
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: Nov 1
Current: $1,548 NZD|Low: $255 NZD|High: $1,564 NZD|Avg: $765 NZD
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
November 1, 2026
Retailer 4$266 NZD
Retailer 8$309 NZD
Retailer 5$330 NZD
Retailer 6$607 NZD
Retailer 2$736 NZD
Retailer 7$896 NZD
Retailer 9$1,002 NZD
Retailer 3$1,123 NZD
MOH London$1,548 NZD

40 data points across 9 retailers

10 retailers$266 NZD to $1,548 NZD

B+
Cheapest Retailer
-
$266 NZD
$150 USD
B+
Retailer 2
-
$309 NZD
$174 USD
View
Retailer 3
-
$330 NZD
$186 USD
View
Price last confirmed 8 days ago
B+
Retailer 4
-
$330 NZD
$186 USD
View
B
Retailer 5
-
$607 NZD
$342 USD
View
B
Retailer 6
-
$736 NZD
£327 GBP
View
B
Retailer 7
-
$896 NZD
$505 USD
View
C
Retailer 8
-
$1,063 NZD
$599 USD
View
C
Retailer 9
-
$1,123 NZD
$633 USD
View
Most Expensive
C
MOH London
LG811646377 · Oct 26
$1,548 NZD
£687 GBP
View
9 more retailers have this diamond
Prices start from $266 NZDSave up to $1,282 NZD

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
$266 NZD