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Marquise|Natural|GIA

1.20ct D SI1 Marquise Natural Diamond

ID • D/SI1 • GIA 2557626736

Certificate GIA 2557626736

Diamond specifications and retailer prices

From $11,334 NZD
As of November 4, 2026
Save $8,603 NZD (43%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: $23,992 NZD at NZ Jewellers · As of November 5, 2026
View at NZ Jewellers

About this 1.2ct natural marquise diamond

This 1.2ct natural marquise sits in the classic one-carat band, graded D colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 2557626736. Listed at 15 retailers as of November 4, 2026, with a 76% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. SI-grade stones are eye-clean roughly 60 to 70% of the time at this carat range. Check the inclusion plot on the cert and ask the retailer for high-resolution video before buying.

The 4Cs

1.20
Carat
D
Colour
SI1
Clarity
Ideal
Cut (retailer stated)

Specifications

Cut (retailer stated)Ideal
PolishExcellent
SymmetryExcellent
FluorescenceMedium
Crown angle37.35°
Pavilion angle41.78°
OriginNatural
Grading LabGIA
CertificateGIA 2557626736
Dimensions10.77 × 5.47 × 3.53 mm
L/W Ratio1.97
Girdle conditionThick
Culet sizeNone
Key to symbols
Crystal, Feather, Natural
Top View
10.77 mm5.47 mm1.20 ctD / SI1
OriginNatural
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceMedium
CertificateGIA 2557626736
Side View
Table 61.0%Crown 37.35°GirdlePavilion 41.78°Culet: NoneDepth 64.6%

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: $13,917 NZD|Low: $13,392 NZD|High: $20,233 NZD|Avg: $15,579 NZD|-1.7%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
November 6, 2026
Retailer 3$13,394 NZD
Retailer 6$13,832 NZD
Retailer 1$13,917 NZD
Retailer 2$15,586 NZD
Retailer 4$17,500 NZD
Retailer 5$19,937 NZD

37 data points across 6 retailers

15 retailers$11,334 NZD to $19,937 NZD

B+
Cheapest Retailer
-
$11,334 NZD
Retailer 2
-
$11,996 NZD
View
Price last confirmed 8 days ago
B
Retailer 3
-
$12,097 NZD
View
B
Retailer 4
-
$12,995 NZD
View
B
Retailer 5
-
$13,196 NZD
View
B
Retailer 6
-
$13,394 NZD
View
B
Retailer 7
-
$13,755 NZD
View
Retailer 8
-
$13,832 NZD
View
Price last confirmed 15 days ago
B
Retailer 9
-
$13,917 NZD
View
B
Retailer 10
-
$14,996 NZD
View
B
Retailer 11
-
$15,586 NZD
View
Retailer 12
-
$15,802 NZD
View
Price last confirmed 14 days ago
B
Retailer 13
-
$17,500 NZD
View
B
Retailer 14
-
$19,937 NZD
View
Most Expensive
NZ Jewellers
e598eb48-456e-4347-a78a-4cc5790481a2 · Nov 5
$23,992 NZD
$13,300 USD
View
Price under review
14 more retailers have this diamond
Prices start from $11,334 NZDSave up to $8,603 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+
1.20ct Marquise
$11,334 NZD