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Round|Lab Grown|GCAL

1.23ct I SI2 Round Lab Grown Diamond

VG • I/SI2 • GCAL 273350190

Shape and cutting style on the report: Round brilliant

Certificate GCAL 273350190

Diamond specifications and retailer prices

From $580 AUD
As of November 6, 2026
Save $1,114 AUD (66%) vs most expensive(unlock to see where)
4 retailers carry this diamond
Most expensive: $1,694 AUD at MOH London · As of November 5, 2026
View at MOH London

About this 1.23ct lab-grown round diamond

This 1.23ct lab-grown round sits in the classic one-carat band, graded I colour (near-colourless) and SI2 clarity (slightly-included), with a very-good cut grade and certified by GCAL 273350190. Listed at 4 retailers as of November 5, 2026, with prices from $580 to $1,694, a $1,114 spread on the same certified stone. MOH London lists it at $1,694. 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

1.23
Carat
I
Colour
SI2
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishGood
SymmetryExcellent
FluorescenceNone
Crown angle35°
Pavilion angle40.8°
OriginLab Grown
Grading LabGCAL
CertificateGCAL 273350190
Dimensions6.88 × 6.91 × 4.19 mm
L/W Ratio1.00
Culet sizeNone
Top View
6.88 mm6.91 mm1.23 ctI / SI2
OriginLab Grown
CutVery Good
PolishGood
SymmetryExcellent
FluorescenceNone
CertificateGCAL 273350190
Side View
Table 60.0%Crown 35°Girdle: STK-STKPavilion 40.8°Culet: NoneDepth 60.7%

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: $1,694 AUD|Low: $311 AUD|High: $1,709 AUD|Avg: $797 AUD|+5.7%
MOH London
Retailer 2
Retailer 3
Retailer 4
November 5, 2026
Retailer 2$330 AUD
Retailer 3$580 AUD
Retailer 4$629 AUD
MOH London$1,694 AUD

12 data points across 4 retailers

4 retailers$580 AUD to $1,694 AUD

Retailer 1
-
$330 AUD
Price last confirmed 12 days ago
B+
Retailer 2
-
$580 AUD
View
B+
Retailer 3
-
$629 AUD
View
Most Expensive
B+
MOH London
273350190 · Nov 5
$1,694 AUD
£934 GBP
View
3 more retailers have this diamond
Prices start from $580 AUDSave up to $1,114 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+
1.23ct Round
$580 AUD