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Round|Lab Grown|IGI

1.28ct H VS1 Round Lab Grown Diamond

ID • H/VS1 • IGI LG781609675

Shape and cutting style on the report: Round brilliant

Certificate IGI LG781609675

Diamond specifications and retailer prices

From $212 USD
As of November 3, 2026
Save $840 USD (80%) vs most expensive(unlock to see where)
18 retailers carry this diamond
Most expensive: $1,052 USD at MOH London · As of November 2, 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 H colour (near-colourless) and VS1 clarity (very-slightly-included), with a top-tier cut grade and certified by IGI LG781609675 or 781609675. Listed at 18 retailers as of November 2, 2026, with prices from $212 to $1,052, a $840 spread on the same certified stone. MOH London lists it at $1,052. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.28
Carat
H
Color
VS1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.4°
Pavilion angle41.1°
OriginLab Grown
Grading LabIGI
CertificateIGI LG781609675
Dimensions6.91 × 6.94 × 4.29 mm
L/W Ratio1.00
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
6.91 mm6.94 mm1.28 ctH / VS1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG781609675
Side View
Table 59.0%Crown 35.4°Girdle: MED-STKPavilion 41.1°Culet: NoneDepth 62.0%

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: Nov 3
Current: $1,052 USD|Low: $203 USD|High: $1,064 USD|Avg: $537 USD|-0.1%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Retailer 14
November 2, 2026
Retailer 11$212 USD
Retailer 4$262 USD
Retailer 13$262 USD
Retailer 14$451 USD
Retailer 9$453 USD
Retailer 6$455 USD
Retailer 8$480 USD
Retailer 3$508 USD
Retailer 10$525 USD
Retailer 12$640 USD
Retailer 2$642 USD
Retailer 7$687 USD
Retailer 5$953 USD
MOH London$1,052 USD

28 data points across 14 retailers

18 retailers$212 USD to $1,052 USD

A
Cheapest Retailer
-
$212 USD
A
Retailer 2
-
$245 USD
View
Retailer 3
-
$262 USD
View
Price last confirmed 9 days ago
A
Retailer 4
-
$262 USD
View
A
Retailer 5
-
$451 USD
View
A
Retailer 6
-
$453 USD
ZAR 7,318 ZAR
View
A
Retailer 7
-
$455 USD
View
A
Retailer 8
-
$480 USD
€457 EUR
View
A
Retailer 9
-
$508 USD
View
A
Retailer 10
-
$525 USD
View
B+
Retailer 11
-
$640 USD
View
A
Retailer 12
-
$642 USD
A$987 AUD
View
B+
Retailer 13
-
$687 USD
View
Retailer 14
-
$769 USD
View
Price last confirmed 48 days ago
B+
Retailer 15
-
$843 USD
View
B
Retailer 16
-
$897 USD
View
B+
Retailer 17
-
$972 USD
View
Most Expensive
B+
MOH London
LG781609675 · Nov 2
$1,052 USD
£828 GBP
View
17 more retailers have this diamond
Prices start from $212 USDSave up to $840 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
$212 USD