CaratHunter
Plans
Cushion|Lab Grown|GCAL

3.12ct I SI1 Cushion Lab Grown Diamond

VG • I/SI1 • GCAL 302750364

Certificate GCAL 302750364

Diamond specifications and retailer prices

From $1,356 AUD
As of October 30, 2026
3 retailers carry this diamond
Most expensive: $4,449 AUD at MOH London · As of October 29, 2026
View at MOH London

About this 3.12ct lab-grown cushion diamond

This 3.12ct 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 302750364. Listed at 3 retailers as of October 30, 2026. 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

3.12
Carat
I
Colour
SI1
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryVery Good
FluorescenceNone
OriginLab Grown
Grading LabGCAL
CertificateGCAL 302750364
Dimensions8.91 × 8.25 × 5.57 mm
L/W Ratio1.08
Top View
8.91 mm8.25 mm3.12 ctI / SI1
OriginLab Grown
CutVery Good
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGCAL 302750364
Side View
Table 63.0%CrownGirdlePavilionCulet: NoneDepth 67.5%

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: Oct 30
Current: $4,449 AUD|Low: $1,356 AUD|High: $4,479 AUD|Avg: $2,412 AUD|-0.5%
MOH London
Retailer 2
Retailer 3
October 29, 2026
Retailer 3$1,356 AUD
Retailer 2$1,432 AUD
MOH London$4,449 AUD

6 data points across 3 retailers

3 retailers

B+
Cheapest Retailer
-
$1,356 AUD
Retailer 2
-
$1,432 AUD
View
Price last confirmed 7 days ago
Most Expensive
MOH London
LG302750364 · Oct 29
$4,449 AUD
£2,407 GBP
View
Price last confirmed 8 days ago
2 more retailers have this diamond
Prices start from $1,356 AUD

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+
3.12ct Cushion
$1,356 AUD