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Cushion|Lab Grown|IGI

1.51ct F SI1 Cushion Lab Grown Diamond

VG • F/SI1 • IGI LG774618688

Shape and cutting style on the report: Cushion modified brilliant

Certificate IGI LG774618688

Diamond specifications and retailer prices

From $412 SGD
$322 USD
As of November 1, 2026
Save $765 SGD (65%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: $1,495 SGD at Reve Diamonds · As of October 25, 2026
View at Reve Diamonds

About this 1.51ct lab-grown cushion diamond

This 1.51ct lab-grown cushion sits in the one-and-a-half to two carat band, graded F colour (colourless) and SI1 clarity (slightly-included), with a very-good cut grade and certified by IGI LG774618688 or 774618688. Listed at 13 retailers as of November 1, 2026, with a 186% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

1.51
Carat
F
Colour
SI1
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle44.2°
Pavilion angle33.1°
OriginLab Grown
Grading LabIGI
CertificateIGI LG774618688
Dimensions7.18 × 5.56 × 3.94 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
7.18 mm5.56 mm1.51 ctF / SI1
OriginLab Grown
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG774618688
Side View
Table 64.0%Crown 44.2°Girdle: MED-THKPavilion 33.1°Culet: NoneDepth 70.9%

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 1
Current: $762 SGD|Low: $274 SGD|High: $1,569 SGD|Avg: $829 SGD|-1.3%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Reve Diamonds
November 2, 2026
Retailer 2$274 SGD
Retailer 11$392 SGD
Retailer 3$412 SGD
Retailer 5$510 SGD
Retailer 8$552 SGD
Retailer 6$604 SGD
Retailer 12$730 SGD
Retailer 1$762 SGD
Retailer 4$1,048 SGD
Retailer 10$1,074 SGD
Retailer 7$1,177 SGD
Retailer 9$1,426 SGD
Reve Diamonds$1,495 SGD

39 data points across 13 retailers

13 retailers$412 SGD to $1,177 SGD

B+
Cheapest Retailer
-
$412 SGD
$322 USD
A
Retailer 2
-
$510 SGD
€380 EUR
View
Retailer 3
-
$552 SGD
£340 GBP
View
Price last confirmed 7 days ago
B+
Retailer 4
-
$604 SGD
$472 USD
View
Retailer 5
-
$730 SGD
$571 USD
View
Price last confirmed 7 days ago
Retailer 6
-
$735 SGD
$575 USD
View
Price last confirmed 21 days ago
B+
Retailer 7
-
$762 SGD
$596 USD
View
B+
Retailer 8
-
$1,048 SGD
$820 USD
View
B+
Retailer 9
-
$1,074 SGD
$840 USD
View
Retailer 10
-
$1,100 SGD
$860 USD
View
Price last confirmed 39 days ago
B
Retailer 11
-
$1,177 SGD
$920 USD
View
Retailer 12
-
$1,426 SGD
£878 GBP
View
Price last confirmed 7 days ago
Most Expensive
Reve Diamonds
8532F276D · Oct 25
$1,495 SGD
$1,169 USD
View
Price last confirmed 8 days ago
12 more retailers have this diamond
Prices start from $412 SGDSave up to $765 SGD

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
1.51ct Cushion
$412 SGD