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Marquise|Natural|GIA

1.20ct K SI1 Marquise Natural Diamond

EX • K/SI1 • GIA 6542456377

Certificate GIA 6542456377

Diamond specifications and retailer prices

From $5,080 NZD
As of November 6, 2026
Save $6,620 NZD (57%) vs most expensive(unlock to see where)
20 retailers carry this diamond
Most expensive: $11,700 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 K colour (faint-tinted) and SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 6542456377. Listed at 20 retailers as of November 5, 2026, with prices from $5,080 to $11,700, a $6,620 spread on the same certified stone. NZ Jewellers lists it at $11,700. 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
K
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryVery Good
FluorescenceFaint
Crown angle38.23°
Pavilion angle39.12°
OriginNatural
Grading LabGIA
CertificateGIA 6542456377
Dimensions10.40 × 5.53 × 3.46 mm
L/W Ratio1.88
Girdle conditionVery Thick
Key to symbols
Feather, Crystal, Needle
Top View
10.40 mm5.53 mm1.20 ctK / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceFaint
CertificateGIA 6542456377
Side View
Table 60.0%Crown 38.23°Girdle: THK-VTKPavilion 39.12°Culet: NoneDepth 62.7%

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 6
Current: $11,700 NZD|Low: $5,080 NZD|High: $11,700 NZD|Avg: $7,366 NZD
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Retailer 14
November 6, 2026
Retailer 8$5,080 NZD
Retailer 6$5,403 NZD
Retailer 12$5,502 NZD
Retailer 13$6,085 NZD
Retailer 14$6,085 NZD
Retailer 4$6,319 NZD
Retailer 2$6,516 NZD
Retailer 5$6,900 NZD
Retailer 7$6,909 NZD
Retailer 3$7,021 NZD
Retailer 11$7,829 NZD
Retailer 9$8,197 NZD
Retailer 10$11,202 NZD
NZ Jewellers$11,700 NZD

36 data points across 14 retailers

20 retailers$5,080 NZD to $11,700 NZD

B+
Cheapest Retailer
-
$5,080 NZD
B+
Retailer 2
-
$5,403 NZD
View
B+
Retailer 3
-
$5,502 NZD
View
B
Retailer 4
-
$5,670 NZD
View
B
Retailer 5
-
$5,872 NZD
View
B
Retailer 6
-
$6,085 NZD
View
Retailer 7
-
$6,085 NZD
View
Price last confirmed 8 days ago
B
Retailer 8
-
$6,106 NZD
View
B
Retailer 9
-
$6,279 NZD
View
B
Retailer 10
-
$6,319 NZD
View
B
Retailer 11
-
$6,516 NZD
View
B
Retailer 12
-
$6,900 NZD
View
Retailer 13
-
$6,900 NZD
View
Price last confirmed 28 days ago
B
Retailer 14
-
$6,909 NZD
View
B
Retailer 15
-
$7,021 NZD
View
Retailer 16
-
$7,605 NZD
View
Price last confirmed 22 days ago
B
Retailer 17
-
$7,829 NZD
View
B
Retailer 18
-
$8,197 NZD
View
B
Retailer 19
-
$11,202 NZD
View
Most Expensive
C
NZ Jewellers
11a171f1-1057-4f87-b4c5-efd38b187b1f · Nov 5
$11,700 NZD
$6,486 USD
View
19 more retailers have this diamond
Prices start from $5,080 NZDSave up to $6,620 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
$5,080 NZD