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Cushion|Lab Grown|GIA

1.56ct F SI1 Cushion Lab Grown Diamond

EX • F/SI1

Diamond specifications and retailer prices

From €559 EUR
£494 GBP
As of November 2, 2026
Save €381 EUR (41%) vs most expensive(unlock to see where)
2 retailers carry this diamond
Most expensive: €941 EUR at Blue Nile · As of October 31, 2026
View at Blue Nile

About this 1.56ct lab-grown cushion diamond

This 1.56ct 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 top-tier cut grade stated by the retailer rather than the lab and certified by GIA. Listed at 2 retailers as of October 31, 2026, with prices from €559 to €941, a €381 spread on the same certified stone. Blue Nile lists it at €941. SI-grade stones are eye-clean roughly 60 to 70% of the time at this carat range. Check the inclusion plot on the cert and ask the retailer for high-resolution video before buying.

The 4Cs

1.56
Carat
F
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
OriginLab Grown
Grading LabGIA
Dimensions8.04 × 6.35 × 0.00 mm
L/W Ratio1.27
Top View
8.04 mm6.35 mm1.56 ctF / SI1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA
Side View
Table 55.0%CrownGirdle: STK-THKPavilionCulet: NoneDepth 65.4%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
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Price History

Last verified: Nov 2
Current: €941 EUR|Low: €559 EUR|High: €1,139 EUR|Avg: €756 EUR
Blue Nile
Retailer 2
November 2, 2026
Retailer 2€559 EUR
Blue Nile€941 EUR

38 data points across 2 retailers

2 retailers€559 EUR to €941 EUR

A
Cheapest Retailer
-
€559 EUR
£494 GBP
Most Expensive
B
Blue Nile
19853212 · Oct 31
€941 EUR
$1,055 USD
View
1 more retailer has this diamond
Prices start from €559 EURSave up to €381 EUR

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
1.56ct Cushion
€559 EUR