Marquise|Natural|GIA

1.20ct K SI2 Marquise Natural Diamond

EX • K/SI2

Diamond specifications and retailer prices

From $2,252 USD
As of November 6, 2026
Save $3,731 USD (62%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: $5,983 USD at NZ Jewellers · As of October 21, 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 SI2 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA. Listed at 14 retailers as of November 5, 2026, with a 166% 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
K
Color
SI2
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
Dimensions9.88 × 5.42 × 3.67 mm
L/W Ratio1.82
Top View
9.88 mm5.42 mm1.20 ctK / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA
Side View
Table 57.0%CrownGirdle: ThickPavilionCulet: NoneDepth 67.7%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 6
Current: $5,983 USD|Low: $2,240 USD|High: $5,983 USD|Avg: $3,038 USD
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
October 26, 2026
Retailer 9$2,240 USD
Retailer 10$2,252 USD
Retailer 2$2,593 USD
Retailer 4$2,593 USD
Retailer 6$2,600 USD
Retailer 8$2,712 USD
Retailer 3$2,778 USD
Retailer 7$2,889 USD
Retailer 5$2,991 USD
NZ Jewellers$5,983 USD

9 data points across 10 retailers

14 retailers$2,252 USD to $5,983 USD

Retailer 1
-
$2,240 USD
Price last confirmed 16 days ago
B+
Retailer 2
-
$2,252 USD
View
Retailer 3
-
$2,593 USD
View
Price last confirmed 8 days ago
Retailer 4
-
$2,593 USD
View
Price last confirmed 15 days ago
B+
Retailer 5
-
$2,593 USD
View
B+
Retailer 6
-
$2,600 USD
View
B+
Retailer 7
-
$2,712 USD
View
B
Retailer 8
-
$2,778 USD
View
Retailer 9
-
$2,778 USD
View
Price last confirmed 15 days ago
B
Retailer 10
-
$2,889 USD
View
B
Retailer 11
-
$2,991 USD
View
Retailer 12
-
$2,991 USD
View
Price last confirmed 16 days ago
C
Retailer 13
-
$5,983 USD
View
Most Expensive
NZ Jewellers
30410b4d-316e-480d-9828-bf820fcc16cf · Oct 21
$5,983 USD
View
Price last confirmed 16 days ago
13 more retailers have this diamond
Prices start from $2,252 USDSave up to $3,731 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.

B+
1.20ct Marquise
$2,252 USD