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Marquise|Natural|GIA

1.20ct D SI1 Marquise Natural Diamond

EX • D/SI1 • GIA 6555380367

Certificate GIA 6555380367

Diamond specifications and retailer prices

From $4,979 USD
As of November 6, 2026
Save $6,231 USD (56%) vs most expensive(unlock to see where)
18 retailers carry this diamond
Most expensive: $11,210 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 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 6555380367. Listed at 18 retailers as of November 5, 2026, with prices from $4,979 to $11,210, a $6,231 spread on the same certified stone. NZ Jewellers lists it at $11,210. 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
Color
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryVery Good
FluorescenceMedium
OriginNatural
Grading LabGIA
CertificateGIA 6555380367
Dimensions11.02 × 5.41 × 3.46 mm
L/W Ratio2.04
Girdle conditionFaceted
Culet sizeNone
Key to symbols
Crystal, Cloud, Feather, Needle, Indented Natural
Top View
11.02 mm5.41 mm1.20 ctD / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceMedium
CertificateGIA 6555380367
Side View
Table 57.0%CrownGirdle: MED-VTKPavilionCulet: NoneDepth 63.9%

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: $7,281 USD|Low: $4,928 USD|High: $9,993 USD|Avg: $7,071 USD|+2.2%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
November 6, 2026
Retailer 5$4,979 USD
Retailer 7$6,186 USD
Retailer 2$6,365 USD
Retailer 6$6,541 USD
Retailer 1$7,281 USD
Retailer 3$8,178 USD
Retailer 4$9,848 USD

46 data points across 7 retailers

18 retailers$4,979 USD to $11,210 USD

B+
Cheapest Retailer
-
$4,979 USD
B+
Retailer 2
-
$5,671 USD
View
Retailer 3
-
$5,675 USD
View
Price last confirmed 23 days ago
B+
Retailer 4
-
$5,845 USD
View
B
Retailer 5
-
$6,186 USD
View
Final sale: no returns
Retailer 6
-
$6,187 USD
View
Price last confirmed 8 days ago
B
Retailer 7
-
$6,220 USD
View
B+
Retailer 8
-
$6,365 USD
View
Retailer 9
-
$6,541 USD
View
Price last confirmed 25 days ago
B
Retailer 10
-
$6,703 USD
View
B
Retailer 11
-
$6,806 USD
View
B
Retailer 12
-
$6,861 USD
View
B
Retailer 13
-
$7,281 USD
View
Retailer 14
-
$7,734 USD
View
Price last confirmed 61 days ago
B
Retailer 15
-
$7,734 USD
View
B
Retailer 16
-
$8,178 USD
View
B
Retailer 17
-
$9,848 USD
View
Most Expensive
B
NZ Jewellers
0bcfb9a2-8027-4021-b8ae-6ab190999d2e · Nov 5
$11,210 USD
View
17 more retailers have this diamond
Prices start from $4,979 USDSave up to $6,231 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
$4,979 USD