Radiant|Lab Grown|IGI

1.28ct D VVS1 Radiant Lab Grown Diamond

ID • D/VVS1 • IGI LG828688726

Shape and cutting style on the report: Cut cornered rectangular modified brilliant

Certificate IGI LG828688726

Diamond specifications and retailer prices

From $218 USD
As of November 4, 2026
Save $1,562 USD (88%) vs most expensive(unlock to see where)
18 retailers carry this diamond
Most expensive: $1,780 USD at Brilliant Earth · As of November 4, 2026
View at Brilliant Earth

About this 1.28ct lab-grown radiant diamond

This 1.28ct lab-grown radiant sits in the one-and-a-quarter to one-and-a-half carat band, graded D colour (colourless) and VVS1 clarity (very-very-slightly-included), with a top-tier cut grade and certified by IGI LG828688726 or 828688726. Listed at 18 retailers as of November 4, 2026, with prices from $218 to $1,780, a $1,562 spread on the same certified stone. Brilliant Earth lists it at $1,780. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.28
Carat
D
Color
VVS1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle47°
Pavilion angle35.5°
OriginLab Grown
Grading LabIGI
CertificateIGI LG828688726
Dimensions7.54 × 5.37 × 3.58 mm
L/W Ratio1.40
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
7.54 mm5.37 mm1.28 ctD / VVS1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG828688726
Side View
Table 65.0%Crown 47°Girdle: STK-THKPavilion 35.5°Culet: NoneDepth 66.7%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 4
Current: $1,780 USD|Low: $218 USD|High: $1,990 USD|Avg: $716 USD|-10.6%
Brilliant Earth
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
Retailer 15
Retailer 16
Retailer 17
November 4, 2026
Retailer 10$218 USD
Retailer 14$225 USD
Retailer 2$274 USD
Retailer 11$325 USD
Retailer 5$417 USD
Retailer 12$435 USD
Retailer 3$443 USD
Retailer 8$565 USD
Retailer 4$590 USD
Retailer 7$636 USD
Retailer 15$777 USD
Retailer 17$785 USD
Retailer 13$812 USD
Retailer 16$827 USD
Retailer 9$1,075 USD
Retailer 6$1,131 USD
Brilliant Earth$1,780 USD

22 data points across 17 retailers

18 retailers$218 USD to $1,780 USD

A
Cheapest Retailer
-
$218 USD
Final sale: no returns
A
Retailer 2
-
$225 USD
View
A
Retailer 3
-
$274 USD
View
B+
Retailer 4
-
$325 USD
View
A
Retailer 5
-
$417 USD
View
A
Retailer 6
-
$435 USD
View
A
Retailer 7
-
$443 USD
View
A
Retailer 8
-
$565 USD
View
B+
Retailer 9
-
$590 USD
View
B+
Retailer 10
-
$636 USD
View
B+
Retailer 11
-
$777 USD
View
B+
Retailer 12
-
$785 USD
View
B+
Retailer 13
-
$812 USD
View
B+
Retailer 14
-
$827 USD
View
Retailer 15
-
$972 USD
View
Price last confirmed 27 days ago
Retailer 16
-
$1,075 USD
View
Price last confirmed 17 days ago
B+
Retailer 17
-
$1,131 USD
View
Most Expensive
B
Brilliant Earth
21325021A · Nov 4
$1,780 USD
View
17 more retailers have this diamond
Prices start from $218 USDSave up to $1,562 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 Radiant
$218 USD