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Cushion|Lab Grown|IGI

1.28ct F VS1 Cushion Lab Grown Diamond

ID • F/VS1 • IGI LG750599918

Shape and cutting style on the report: Cushion modified brilliant

Certificate IGI LG750599918

Diamond specifications and retailer prices

From $280 USD
£220 GBP
As of October 29, 2026
Save $813 USD (74%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: $1,153 USD at Reve Diamonds · As of October 11, 2026
View at Reve Diamonds

About this 1.28ct lab-grown cushion diamond

This 1.28ct lab-grown cushion sits in the one-and-a-quarter to one-and-a-half carat band, graded F colour (colourless) and VS1 clarity (very-slightly-included), with a top-tier cut grade and certified by IGI LG750599918 or 750599918. Listed at 12 retailers as of October 29, 2026, with a 291% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.28
Carat
F
Color
VS1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle28.9°
Pavilion angle41.2°
OriginLab Grown
Grading LabIGI
CertificateIGI LG750599918
Dimensions7.55 × 5.87 × 3.91 mm
L/W Ratio1.29
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
7.55 mm5.87 mm1.28 ctF / VS1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG750599918
Side View
Table 64.0%Crown 28.9°Girdle: MED-STKPavilion 41.2°Culet: NoneDepth 66.6%

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: Oct 29
Current: $1,092 USD|Low: $203 USD|High: $1,153 USD|Avg: $558 USD|+3.5%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Reve Diamonds
October 29, 2026
Retailer 3$209 USD
Retailer 5$225 USD
Retailer 6$280 USD
Retailer 8$399 USD
Retailer 4$408 USD
Retailer 9$416 USD
Retailer 7$419 USD
Retailer 13$478 USD
Retailer 12$557 USD
Retailer 10$567 USD
Retailer 2$801 USD
Retailer 11$840 USD
Retailer 1$1,092 USD
Reve Diamonds$1,153 USD

39 data points across 14 retailers

12 retailers$280 USD to $1,092 USD

A
Cheapest Retailer
-
$280 USD
£220 GBP
Returns within 30 days
A
Retailer 2
-
$399 USD
ZAR 6,445 ZAR
View
Returns within 7 days
A
Retailer 3
-
$408 USD
View
Returns within 30 days
A
Retailer 4
-
$416 USD
€396 EUR
View
Returns within 100 days
A
Retailer 5
-
$419 USD
£330 GBP
View
Returns within 30 days
A
Retailer 6
-
$478 USD
View
Returns within 30 days
B+
Retailer 7
-
$557 USD
View
Returns within 30 days
B+
Retailer 8
-
$567 USD
A$872 AUD
View
B
Retailer 9
-
$801 USD
View
Returns within 90 days
B+
Retailer 10
-
$840 USD
View
Returns within 30 days
B
Retailer 11
-
$1,092 USD
£860 GBP
View
Most Expensive
B
Reve Diamonds
26DD45DAA · Oct 11
$1,153 USD
View
Price last confirmed 18 days ago
Returns within 30 days
11 more retailers have this diamond
Prices start from $280 USDSave up to $813 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 Cushion
$280 USD