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Cushion|Lab Grown|GIA

3.13ct E SI1 Cushion Lab Grown Diamond

VG • E/SI1

Diamond specifications and retailer prices

From £844 GBP
$1,131 USD
As of October 30, 2026
Save £2,262 GBP (73%) vs most expensive(unlock to see where)
3 retailers carry this diamond
Most expensive: £3,106 GBP at Diamond Exchange Canada · As of October 30, 2026
View at Diamond Exchange Canada

About this 3.13ct lab-grown cushion diamond

This 3.13ct lab-grown cushion sits in the three to five carat band, graded E colour (colourless) and SI1 clarity (slightly-included), with a very-good cut grade stated by the retailer rather than the lab and certified by GIA. Listed at 3 retailers as of October 30, 2026, with prices from £844 to £3,106, a £2,262 spread on the same certified stone. Diamond Exchange Canada lists it at £3,106. 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

3.13
Carat
E
Colour
SI1
Clarity
Very Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Very Good
PolishExcellent
SymmetryVery Good
FluorescenceNone
OriginLab Grown
Grading LabGIA
Dimensions9.25 × 8.01 × 5.49 mm
L/W Ratio1.15
Top View
9.25 mm8.01 mm3.13 ctE / SI1
OriginLab Grown
CutVery Good
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA
Side View
Table 62.0%CrownGirdle: MediumPavilionCulet: NoneDepth 68.5%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 30
Current: £3,106 GBP|Low: £791 GBP|High: £3,106 GBP|Avg: £1,714 GBP
Diamond Exchange Canada
Retailer 2
Retailer 3
October 30, 2026
Retailer 3£844 GBP
Retailer 2£1,122 GBP
Diamond Exchange Canada£3,106 GBP

39 data points across 3 retailers

3 retailers£844 GBP to £3,106 GBP

B+
Cheapest Retailer
-
£844 GBP
$1,131 USD
B+
Retailer 2
-
£1,122 GBP
View
Most Expensive
C
Diamond Exchange Canada
1986529767 · Oct 30
£3,106 GBP
CA$5,781 CAD
View
2 more retailers have this diamond
Prices start from £844 GBPSave up to £2,262 GBP

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.

B+
3.13ct Cushion
£844 GBP