Round|Lab Grown|IGI

1.28ct G VS1 Round Lab Grown Diamond

ID • G/VS1 • IGI LG811646745

Shape and cutting style on the report: Round brilliant

Certificate IGI LG811646745

Diamond specifications and retailer prices

From $179 USD
As of October 29, 2026
Save $862 USD (83%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: $1,041 USD at MOH London · As of October 29, 2026
View at MOH London

About this 1.28ct lab-grown round diamond

This 1.28ct lab-grown round sits in the one-and-a-quarter to one-and-a-half carat band, graded G colour (near-colourless) and VS1 clarity (very-slightly-included), with a top-tier cut grade and certified by IGI LG811646745 or 811646745. Listed at 19 retailers as of October 29, 2026, with prices from $179 to $1,041, a $862 spread on the same certified stone. MOH London lists it at $1,041. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.28
Carat
G
Color
VS1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.1°
Pavilion angle41°
OriginLab Grown
Grading LabIGI
CertificateIGI LG811646745
Dimensions6.94 × 6.91 × 4.31 mm
L/W Ratio1.00
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
6.94 mm6.91 mm1.28 ctG / VS1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG811646745
Side View
Table 58.0%Crown 35.1°Girdle: MED-STKPavilion 41°Culet: NoneDepth 62.3%

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: $1,041 USD|Low: $179 USD|High: $1,049 USD|Avg: $522 USD|+0.4%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
October 30, 2026
Retailer 10$179 USD
Retailer 12$222 USD
Retailer 6$381 USD
Retailer 3$393 USD
Retailer 2$398 USD
Retailer 5$412 USD
Retailer 4$472 USD
Retailer 8$530 USD
Retailer 7$541 USD
Retailer 9$559 USD
Retailer 11$880 USD
MOH London$1,041 USD

45 data points across 12 retailers

19 retailers$179 USD to $1,041 USD

A
Cheapest Retailer
-
$179 USD
A
Retailer 2
-
$207 USD
View
A
Retailer 3
-
$222 USD
View
A
Retailer 4
-
$222 USD
View
A
Retailer 5
-
$381 USD
ZAR 6,148 ZAR
View
A
Retailer 6
-
$393 USD
View
A
Retailer 7
-
$398 USD
£313 GBP
View
A
Retailer 8
-
$412 USD
€392 EUR
View
A
Retailer 9
-
$431 USD
View
B+
Retailer 10
-
$472 USD
View
Retailer 11
-
$530 USD
View
Price last confirmed 12 days ago
B+
Retailer 12
-
$541 USD
A$832 AUD
View
B+
Retailer 13
-
$559 USD
View
Retailer 14
-
$681 USD
View
Price last confirmed 36 days ago
B
Retailer 15
-
$713 USD
View
B
Retailer 16
-
$767 USD
View
B
Retailer 17
-
$798 USD
View
B
Retailer 18
-
$880 USD
View
Most Expensive
B
MOH London
LG811646745 · Oct 29
$1,041 USD
£820 GBP
View
18 more retailers have this diamond
Prices start from $179 USDSave up to $862 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.

A
1.28ct Round
$179 USD