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Marquise|Natural|GIA

1.20ct K SI1 Marquise Natural Diamond

VG • K/SI1 • GIA 1555561508

Certificate GIA 1555561508

Diamond specifications and retailer prices

From $5,017 NZD
As of November 5, 2026
Save $5,186 NZD (51%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: $10,657 NZD at NZ Jewellers · As of September 30, 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 K colour (faint-tinted) and SI1 clarity (slightly-included), with a very-good cut grade stated by the retailer rather than the lab and certified by GIA 1555561508. Listed at 10 retailers as of November 4, 2026, with a 103% 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

1.20
Carat
K
Colour
SI1
Clarity
Very Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Very Good
PolishExcellent
SymmetryExcellent
FluorescenceStrong
Crown angle39.97°
Pavilion angle40.64°
OriginNatural
Grading LabGIA
CertificateGIA 1555561508
Dimensions10.39 × 5.47 × 3.54 mm
L/W Ratio1.90
Culet sizeNone
Top View
10.39 mm5.47 mm1.20 ctK / SI1
OriginNatural
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceStrong
CertificateGIA 1555561508
Side View
Table 60.0%Crown 39.97°Girdle: MED-THKPavilion 40.64°Culet: NoneDepth 64.7%

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: $6,353 NZD|Low: $4,503 NZD|High: $10,353 NZD|Avg: $6,355 NZD|+1.5%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
November 6, 2026
Retailer 2$4,503 NZD
Retailer 3$4,934 NZD
Retailer 7$5,017 NZD
Retailer 12$5,309 NZD
Retailer 10$5,471 NZD
Retailer 9$6,079 NZD
Retailer 11$6,079 NZD
Retailer 1$6,353 NZD
Retailer 4$6,649 NZD
Retailer 6$7,131 NZD
Retailer 8$8,915 NZD
Retailer 5$10,203 NZD

40 data points across 12 retailers

10 retailers$5,017 NZD to $10,203 NZD

B+
Cheapest Retailer
-
$5,017 NZD
B
Retailer 2
-
$5,309 NZD
View
B
Retailer 3
-
$5,471 NZD
View
B
Retailer 4
-
$6,079 NZD
View
B
Retailer 5
-
$6,079 NZD
View
B
Retailer 6
-
$6,353 NZD
View
B
Retailer 7
-
$7,131 NZD
View
C
Retailer 8
-
$8,915 NZD
View
B
Retailer 9
-
$10,203 NZD
View
Most Expensive
NZ Jewellers
ce9108f9-6f9e-4a33-8266-5974e0a46584 · Sep 30
$10,657 NZD
$5,908 USD
View
Price last confirmed 37 days ago
9 more retailers have this diamond
Prices start from $5,017 NZDSave up to $5,186 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
$5,017 NZD