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1.23ct I VS1 Round Lab Grown Diamond

VG • I/VS1 • GCAL 291690187

Shape and cutting style on the report: Round brilliant

Certificate GCAL 291690187

Diamond specifications and retailer prices

From $720 NZD
As of November 4, 2026
Save $1,384 NZD (66%) vs most expensive(unlock to see where)
5 retailers carry this diamond
Most expensive: $2,104 NZD 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 VS1 clarity (very-slightly-included), with a very-good cut grade and certified by GCAL 291690187. Listed at 5 retailers as of November 4, 2026, with prices from $720 to $2,104, a $1,384 spread on the same certified stone. MOH London lists it at $2,104. 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
VS1
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishVery Good
SymmetryVery Good
FluorescenceNone
Crown angle35°
Pavilion angle41.4°
OriginLab Grown
Grading LabGCAL
CertificateGCAL 291690187
Dimensions6.86 × 6.81 × 4.26 mm
L/W Ratio1.01
Culet sizeNone
Top View
6.86 mm6.81 mm1.23 ctI / VS1
OriginLab Grown
CutVery Good
PolishVery Good
SymmetryVery Good
FluorescenceNone
CertificateGCAL 291690187
Side View
Table 59.0%Crown 35°Girdle: MED-STKPavilion 41.4°Culet: NoneDepth 62.3%

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 4
Current: $2,104 NZD|Low: $385 NZD|High: $2,136 NZD|Avg: $1,212 NZD|+5.8%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
November 5, 2026
Retailer 2$410 NZD
Retailer 3$720 NZD
Retailer 4$919 NZD
Retailer 5$1,756 NZD
MOH London$2,104 NZD

12 data points across 5 retailers

5 retailers$720 NZD to $2,104 NZD

Retailer 1
-
$410 NZD
Price last confirmed 11 days ago
B+
Retailer 2
-
$720 NZD
View
B+
Retailer 3
-
$919 NZD
View
B
Retailer 4
-
$1,756 NZD
View
Most Expensive
B
MOH London
291690187 · Nov 5
$2,104 NZD
£934 GBP
View
4 more retailers have this diamond
Prices start from $720 NZDSave up to $1,384 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+
1.23ct Round
$720 NZD