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Round|Lab Grown|GCAL

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 $519 SGD
As of November 4, 2026
Save $997 SGD (66%) vs most expensive(unlock to see where)
5 retailers carry this diamond
Most expensive: $1,516 SGD 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 $519 to $1,516, a $997 spread on the same certified stone. MOH London lists it at $1,516. 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
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 4
Current: $1,516 SGD|Low: $277 SGD|High: $1,539 SGD|Avg: $873 SGD|+5.8%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
November 5, 2026
Retailer 2$295 SGD
Retailer 3$519 SGD
Retailer 4$662 SGD
Retailer 5$1,265 SGD
MOH London$1,516 SGD

12 data points across 5 retailers

5 retailers$519 SGD to $1,516 SGD

Retailer 1
-
$295 SGD
Price last confirmed 11 days ago
B+
Retailer 2
-
$519 SGD
View
B+
Retailer 3
-
$662 SGD
View
B
Retailer 4
-
$1,265 SGD
View
Most Expensive
B
MOH London
291690187 · Nov 5
$1,516 SGD
£934 GBP
View
4 more retailers have this diamond
Prices start from $519 SGDSave up to $997 SGD

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
$519 SGD