Marquise|Natural|GIA

1.20ct K SI1 Marquise Natural Diamond

EX • K/SI1 • GIA 6542707387

Certificate GIA 6542707387

Diamond specifications and retailer prices

From $2,304 USD
As of November 5, 2026
Save $3,580 USD (61%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: $5,884 USD 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 6542707387. Listed at 14 retailers as of November 5, 2026, with prices from $2,304 to $5,884, a $3,580 spread on the same certified stone. NZ Jewellers lists it at $5,884. 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
Color
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceStrong
Crown angle37.15°
Pavilion angle39.09°
OriginNatural
Grading LabGIA
CertificateGIA 6542707387
Dimensions10.60 × 5.57 × 3.44 mm
L/W Ratio1.90
Top View
10.60 mm5.57 mm1.20 ctK / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceStrong
CertificateGIA 6542707387
Side View
Table 58.0%Crown 37.15°Girdle: STK-THKPavilion 39.09°Culet: NoneDepth 61.8%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 5
Current: $5,884 USD|Low: $2,304 USD|High: $5,884 USD|Avg: $3,171 USD
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 6$2,304 USD
Retailer 14$2,525 USD
Retailer 3$2,550 USD
Retailer 4$2,550 USD
Retailer 12$2,668 USD
Retailer 2$2,730 USD
Retailer 9$2,828 USD
Retailer 5$2,850 USD
Retailer 13$2,942 USD
Retailer 8$2,961 USD
Retailer 7$3,276 USD
Retailer 10$3,435 USD
Retailer 11$4,917 USD
NZ Jewellers$5,884 USD

29 data points across 14 retailers

14 retailers$2,304 USD to $5,884 USD

A
Cheapest Retailer
-
$2,304 USD
B+
Retailer 2
-
$2,525 USD
View
Retailer 3
-
$2,550 USD
View
Price last confirmed 25 days ago
B+
Retailer 4
-
$2,550 USD
View
B+
Retailer 5
-
$2,668 USD
View
B+
Retailer 6
-
$2,730 USD
View
B+
Retailer 7
-
$2,828 USD
View
B+
Retailer 8
-
$2,850 USD
View
B+
Retailer 9
-
$2,942 USD
View
B+
Retailer 10
-
$2,961 USD
View
B
Retailer 11
-
$3,276 USD
View
B
Retailer 12
-
$3,435 USD
View
B
Retailer 13
-
$4,917 USD
View
Most Expensive
C
NZ Jewellers
fcd1d8e7-efd8-4cc6-a80c-c6ef134f29a9 · Nov 5
$5,884 USD
View
13 more retailers have this diamond
Prices start from $2,304 USDSave up to $3,580 USD

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.

A
1.20ct Marquise
$2,304 USD