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Marquise|Natural|GIA

1.23ct J SI1 Marquise Natural Diamond

GD • J/SI1 • GIA 2233984750

Certificate GIA 2233984750

Diamond specifications and retailer prices

From $5,646 NZD
As of November 4, 2026
Save $4,687 NZD (45%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: $12,729 NZD at MOH London · As of October 8, 2026
View at MOH London

About this 1.23ct natural marquise diamond

This 1.23ct natural marquise sits in the classic one-carat band, graded J colour (near-colourless) and SI1 clarity (slightly-included), with a standard cut grade stated by the retailer rather than the lab and certified by GIA 2233984750. Listed at 10 retailers as of November 4, 2026, with a 83% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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
J
Colour
SI1
Clarity
Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Good
PolishGood
SymmetryVery Good
FluorescenceFaint
OriginNatural
Grading LabGIA
CertificateGIA 2233984750
Dimensions11.56 × 6.12 × 2.79 mm
L/W Ratio1.89
Top View
11.56 mm6.12 mm1.23 ctJ / SI1
OriginNatural
CutGood
PolishGood
SymmetryVery Good
FluorescenceFaint
CertificateGIA 2233984750
Side View
Table 63.0%CrownGirdle: MED-THKPavilionCulet: SmallDepth 45.6%

Caratlytics Score

How it works →
B
Good
Decent quality, room for better deals
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 4
Current: $12,729 NZD|Low: $5,311 NZD|High: $12,761 NZD|Avg: $7,706 NZD|+3.6%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
October 24, 2026
Retailer 7$5,646 NZD
Retailer 2$5,682 NZD
Retailer 6$5,841 NZD
Retailer 13$6,065 NZD
Retailer 5$6,155 NZD
Retailer 8$6,413 NZD
Retailer 12$6,824 NZD
Retailer 11$8,083 NZD
Retailer 9$8,460 NZD
Retailer 4$8,531 NZD
Retailer 3$9,090 NZD
Retailer 10$10,333 NZD
MOH London$12,729 NZD

17 data points across 13 retailers

10 retailers$5,646 NZD to $10,333 NZD

B
Cheapest Retailer
-
$5,646 NZD
B
Retailer 2
-
$5,682 NZD
View
B
Retailer 3
-
$5,841 NZD
View
Final sale: no returns
B
Retailer 4
-
$6,155 NZD
View
B
Retailer 5
-
$6,413 NZD
View
Retailer 6
-
$8,083 NZD
View
Price last confirmed 34 days ago
Retailer 7
-
$8,531 NZD
View
Price last confirmed 30 days ago
Retailer 8
-
$9,090 NZD
View
Price last confirmed 38 days ago
C
Retailer 9
-
$10,333 NZD
View
Most Expensive
MOH London
59763D0AB · Oct 8
$12,729 NZD
£5,556 GBP
View
Price last confirmed 29 days ago
9 more retailers have this diamond
Prices start from $5,646 NZDSave up to $4,687 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 Marquise
$5,646 NZD