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Round|Lab Grown|IGI

1.28ct H VS1 Round Lab Grown Diamond

EX • H/VS1 • IGI LG350871005

Shape and cutting style on the report: Round brilliant

Certificate IGI LG350871005

Diamond specifications and retailer prices

From $249 USD
As of November 3, 2026
Save $2,141 USD (90%) vs most expensive(unlock to see where)
20 retailers carry this diamond
Most expensive: $2,390 USD at Do Amore Diamonds · As of November 2, 2026
View at Do Amore Diamonds

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 LG350871005 or 350871005. Listed at 20 retailers as of November 2, 2026, with prices from $249 to $2,390, a $2,141 spread on the same certified stone. Do Amore Diamonds lists it at $2,390. 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
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.5°
Pavilion angle41.5°
OriginLab Grown
Grading LabIGI
CertificateIGI LG350871005
Dimensions6.94 × 6.97 × 4.34 mm
L/W Ratio1.00
Girdle conditionFaceted
Cert comments
This Chemical Vapor Deposition (CVD) laboratory grown diamond is classified as Type IIa
Top View
6.94 mm6.97 mm1.28 ctH / VS1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG350871005
Side View
Table 57.5%Crown 35.5°Girdle: MediumPavilion 41.5°Culet: NoneDepth 62.5%

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: $2,390 USD|Low: $249 USD|High: $2,390 USD|Avg: $779 USD
Do Amore Diamonds
Retailer 2
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Retailer 20
November 3, 2026
Retailer 4$249 USD
Retailer 20$289 USD
Retailer 6$309 USD
Retailer 18$309 USD
Retailer 5$361 USD
Retailer 16$362 USD
Retailer 10$500 USD
Retailer 2$552 USD
Retailer 14$589 USD
Retailer 3$625 USD
Retailer 13$625 USD
Retailer 12$754 USD
Retailer 17$831 USD
Retailer 8$950 USD
Retailer 15$1,070 USD
Retailer 11$1,085 USD
Retailer 7$1,098 USD
Retailer 9$1,265 USD
Retailer 19$1,370 USD
Do Amore Diamonds$2,390 USD

17 data points across 20 retailers

20 retailers$249 USD to $2,390 USD

A
Cheapest Retailer
-
$249 USD
A
Retailer 2
-
$289 USD
View
A
Retailer 3
-
$309 USD
View
Retailer 4
-
$309 USD
View
Price last confirmed 9 days ago
A
Retailer 5
-
$361 USD
View
B+
Retailer 6
-
$362 USD
View
A
Retailer 7
-
$500 USD
View
A
Retailer 8
-
$552 USD
View
A
Retailer 9
-
$589 USD
ZAR 9,511 ZAR
View
A
Retailer 10
-
$625 USD
View
A
Retailer 11
-
$625 USD
£492 GBP
View
B+
Retailer 12
-
$754 USD
View
B+
Retailer 13
-
$831 USD
A$1,278 AUD
View
B+
Retailer 14
-
$950 USD
View
B
Retailer 15
-
$1,070 USD
View
B+
Retailer 16
-
$1,085 USD
View
B+
Retailer 17
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$1,098 USD
View
B
Retailer 18
-
$1,265 USD
View
Retailer 19
-
$1,370 USD
£1,079 GBP
View
Price last confirmed 7 days ago
Most Expensive
B
Do Amore Diamonds
27-CA672D874 · Nov 2
$2,390 USD
View
19 more retailers have this diamond
Prices start from $249 USDSave up to $2,141 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
$249 USD