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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 $1,681 NZD
As of October 30, 2026
3 retailers carry this diamond
Most expensive: $5,514 NZD 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

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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: $5,514 NZD|Low: $1,681 NZD|High: $5,551 NZD|Avg: $2,990 NZD|-0.5%
MOH London
Retailer 2
Retailer 3
October 29, 2026
Retailer 3$1,681 NZD
Retailer 2$1,775 NZD
MOH London$5,514 NZD

6 data points across 3 retailers

3 retailers

B+
Cheapest Retailer
-
$1,681 NZD
Retailer 2
-
$1,775 NZD
View
Price last confirmed 7 days ago
Most Expensive
MOH London
LG302750364 · Oct 29
$5,514 NZD
£2,407 GBP
View
Price last confirmed 8 days ago
2 more retailers have this diamond
Prices start from $1,681 NZD

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
$1,681 NZD