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Marquise|Natural|GIA

0.50ct I SI1 Marquise Natural Diamond

GD • I/SI1 • GIA 2536185026

Certificate GIA 2536185026

Diamond specifications and retailer prices

From $1,160 NZD
As of November 5, 2026
Save $1,513 NZD (57%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: $3,637 NZD at NZ Jewellers · As of November 5, 2026
View at NZ Jewellers

About this 0.5ct natural marquise diamond

This 0.5ct natural marquise sits in the half to three-quarter carat band, graded I 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 2536185026. Listed at 16 retailers as of November 4, 2026, with a 130% 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

0.50
Carat
I
Colour
SI1
Clarity
Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Good
PolishExcellent
SymmetryVery Good
FluorescenceFaint
OriginNatural
Grading LabGIA
CertificateGIA 2536185026
Dimensions8.75 × 4.01 × 2.50 mm
L/W Ratio2.18
Top View
8.75 mm4.01 mm0.50 ctI / SI1
OriginNatural
CutGood
PolishExcellent
SymmetryVery Good
FluorescenceFaint
CertificateGIA 2536185026
Side View
Table 55.0%CrownGirdle: STK-VTKPavilionCulet: NoneDepth 62.4%

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 5
Current: $1,414 NZD|Low: $1,173 NZD|High: $2,709 NZD|Avg: $1,645 NZD|-1.8%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
November 6, 2026
Retailer 7$1,173 NZD
Retailer 2$1,205 NZD
Retailer 9$1,248 NZD
Retailer 3$1,412 NZD
Retailer 1$1,414 NZD
Retailer 6$1,497 NZD
Retailer 5$1,696 NZD
Retailer 8$1,743 NZD
Retailer 4$2,673 NZD

39 data points across 9 retailers

16 retailers$1,160 NZD to $2,673 NZD

B+
Cheapest Retailer
-
$1,160 NZD
B+
Retailer 2
-
$1,173 NZD
View
B+
Retailer 3
-
$1,205 NZD
View
Retailer 4
-
$1,248 NZD
View
Price last confirmed 9 days ago
B+
Retailer 5
-
$1,248 NZD
View
Retailer 6
-
$1,338 NZD
View
Price last confirmed 61 days ago
B
Retailer 7
-
$1,338 NZD
View
B
Retailer 8
-
$1,369 NZD
View
B
Retailer 9
-
$1,396 NZD
View
B
Retailer 10
-
$1,412 NZD
View
B
Retailer 11
-
$1,414 NZD
View
B
Retailer 12
-
$1,497 NZD
View
B
Retailer 13
-
$1,696 NZD
View
Retailer 14
-
$1,743 NZD
View
Price last confirmed 33 days ago
B
Retailer 15
-
$2,673 NZD
View
Most Expensive
NZ Jewellers
17f14358-a33c-4d3b-91f6-048f1987f085 · Nov 5
$3,637 NZD
$2,016 USD
View
Price under review
15 more retailers have this diamond
Prices start from $1,160 NZDSave up to $1,513 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+
0.50ct Marquise
$1,160 NZD