Radiant|Lab Grown|IGI

1.28ct E VS1 Radiant Lab Grown Diamond

EX • E/VS1 • IGI LG751511531

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

Certificate IGI LG751511531

Diamond specifications and retailer prices

From $206 USD
As of October 27, 2026
Save $1,764 USD (90%) vs most expensive(unlock to see where)
17 retailers carry this diamond
Most expensive: $1,970 USD at Do Amore Diamonds · As of October 29, 2026
View at Do Amore Diamonds

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 E colour (colourless) and VS1 clarity (very-slightly-included), with a top-tier cut grade and certified by IGI LG751511531 or 751511531. Listed at 17 retailers as of October 27, 2026, with prices from $206 to $1,970, a $1,764 spread on the same certified stone. Do Amore Diamonds lists it at $1,970. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.28
Carat
E
Color
VS1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle41.6°
Pavilion angle34.9°
OriginLab Grown
Grading LabIGI
CertificateIGI LG751511531
Dimensions7.80 × 5.33 × 3.62 mm
L/W Ratio1.46
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
7.80 mm5.33 mm1.28 ctE / VS1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG751511531
Side View
Table 64.0%Crown 41.6°Girdle: MediumPavilion 34.9°Culet: NoneDepth 67.9%

Caratlytics Score

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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 27
Current: $1,970 USD|Low: $152 USD|High: $1,970 USD|Avg: $711 USD
Do Amore Diamonds
Retailer 2
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Retailer 20
October 29, 2026
Retailer 9$152 USD
Retailer 19$206 USD
Retailer 7$230 USD
Retailer 6$255 USD
Retailer 20$255 USD
Retailer 13$354 USD
Retailer 3$375 USD
Retailer 5$439 USD
Retailer 2$524 USD
Retailer 4$576 USD
Retailer 16$650 USD
Retailer 14$686 USD
Retailer 18$822 USD
Retailer 17$904 USD
Retailer 10$1,021 USD
Retailer 11$1,076 USD
Retailer 15$1,129 USD
Retailer 12$1,211 USD
Retailer 8$1,350 USD
Do Amore Diamonds$1,970 USD

32 data points across 20 retailers

17 retailers$206 USD to $1,970 USD

A
Cheapest Retailer
-
$206 USD
A
Retailer 2
-
$230 USD
View
Final sale: no returns
A
Retailer 3
-
$255 USD
View
A
Retailer 4
-
$255 USD
View
A
Retailer 5
-
$354 USD
£279 GBP
View
A
Retailer 6
-
$375 USD
View
A
Retailer 7
-
$439 USD
View
B+
Retailer 8
-
$524 USD
£412 GBP
View
B+
Retailer 9
-
$576 USD
View
B+
Retailer 10
-
$650 USD
View
Price last confirmed 8 days ago
B+
Retailer 11
-
$686 USD
A$1,056 AUD
View
B
Retailer 12
-
$822 USD
View
B
Retailer 13
-
$904 USD
View
B
Retailer 14
-
$1,076 USD
View
B
Retailer 15
-
$1,129 USD
£889 GBP
View
B
Retailer 16
-
$1,211 USD
View
Most Expensive
B
Do Amore Diamonds
27-164EC14EC · Oct 29
$1,970 USD
View
16 more retailers have this diamond
Prices start from $206 USDSave up to $1,764 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
$206 USD