CaratHunter
Plans
Cushion|Lab Grown|GCAL

3.07ct I SI1 Cushion Lab Grown Diamond

VG • I/SI1 • GCAL 303170185

Certificate GCAL 303170185

Diamond specifications and retailer prices

From £676 GBP
As of November 6, 2026
Save £1,556 GBP (70%) vs most expensive(unlock to see where)
3 retailers carry this diamond
Most expensive: £2,232 GBP at MOH London · As of November 5, 2026
View at MOH London

About this 3.07ct lab-grown cushion diamond

This 3.07ct lab-grown cushion sits in the three to five carat band, graded I colour (near-colourless) and SI1 clarity (slightly-included), with a very-good cut grade and certified by GCAL 303170185. Listed at 3 retailers as of November 5, 2026, with prices from £676 to £2,232, a £1,556 spread on the same certified stone. MOH London lists it at £2,232. 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

3.07
Carat
I
Colour
SI1
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishVery Good
SymmetryVery Good
FluorescenceNone
OriginLab Grown
Grading LabGCAL
CertificateGCAL 303170185
Dimensions8.89 × 8.25 × 5.51 mm
L/W Ratio1.08
Top View
8.89 mm8.25 mm3.07 ctI / SI1
OriginLab Grown
CutVery Good
PolishVery Good
SymmetryVery Good
FluorescenceNone
CertificateGCAL 303170185
Side View
Table 63.0%CrownGirdlePavilionCulet: NoneDepth 66.8%

Caratlytics Score

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

Price History

Last verified: Nov 6
Current: £2,232 GBP|Low: £676 GBP|High: £2,264 GBP|Avg: £1,216 GBP|-0.3%
MOH London
Retailer 2
Retailer 3
November 5, 2026
Retailer 3£676 GBP
Retailer 2£725 GBP
MOH London£2,232 GBP

11 data points across 3 retailers

3 retailers£676 GBP to £2,232 GBP

B+
Cheapest Retailer
-
£676 GBP
B+
Retailer 2
-
£725 GBP
View
Most Expensive
B
MOH London
LG303170185 · Nov 5
£2,232 GBP
View
2 more retailers have this diamond
Prices start from £676 GBPSave up to £1,556 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+
3.07ct Cushion
£676 GBP