Marquise|Natural|GIA

1.20ct H SI1 Marquise Natural Diamond

VG • H/SI1 • GIA 6555349689

Certificate GIA 6555349689

Diamond specifications and retailer prices

From $4,209 USD
As of November 6, 2026
Save $4,780 USD (53%) vs most expensive(unlock to see where)
28 retailers carry this diamond
Most expensive: $9,439 USD at NZ Jewellers · As of October 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 H colour (near-colourless) and SI1 clarity (slightly-included), with a very-good cut grade stated by the retailer rather than the lab and certified by GIA 6555349689. Listed at 28 retailers as of November 1, 2026, with a 114% 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
H
Color
SI1
Clarity
Very Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Very Good
PolishExcellent
SymmetryVery Good
FluorescenceFaint
Crown angle40.45°
Pavilion angle40.67°
OriginNatural
Grading LabGIA
CertificateGIA 6555349689
Dimensions10.16 × 5.45 × 3.58 mm
L/W Ratio1.86
Culet sizeNone
Top View
10.16 mm5.45 mm1.20 ctH / SI1
OriginNatural
CutVery Good
PolishExcellent
SymmetryVery Good
FluorescenceFaint
CertificateGIA 6555349689
Side View
Table 60.0%Crown 40.45°Girdle: VTN-VTKPavilion 40.67°Culet: NoneDepth 65.7%

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: $9,439 USD|Low: $3,401 USD|High: $9,439 USD|Avg: $5,333 USD
NZ Jewellers
Retailer 2
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Retailer 29
November 3, 2026
Retailer 21$3,722 USD
Retailer 20$3,923 USD
Retailer 4$4,310 USD
Retailer 9$4,409 USD
Retailer 3$4,458 USD
Retailer 16$4,459 USD
Retailer 12$4,513 USD
Retailer 11$4,718 USD
Retailer 15$4,805 USD
Retailer 10$5,062 USD
Retailer 13$5,113 USD
Retailer 26$5,113 USD
Retailer 29$5,113 USD
Retailer 19$5,289 USD
Retailer 7$5,304 USD
Retailer 22$5,319 USD
Retailer 23$5,504 USD
Retailer 2$5,505 USD
Retailer 8$5,660 USD
Retailer 18$5,660 USD
Retailer 5$5,673 USD
Retailer 14$5,791 USD
Retailer 17$5,850 USD
Retailer 28$5,899 USD
Retailer 24$6,024 USD
Retailer 27$6,937 USD
Retailer 6$8,173 USD
Retailer 25$8,989 USD
NZ Jewellers$9,439 USD

28 data points across 29 retailers

28 retailers$4,209 USD to $8,989 USD

Retailer 1
-
$4,170 USD
Price last confirmed 30 days ago
B
Retailer 2
-
$4,209 USD
View
B+
Retailer 3
-
$4,310 USD
View
B
Retailer 4
-
$4,409 USD
View
B
Retailer 5
-
$4,458 USD
View
B
Retailer 6
-
$4,459 USD
View
B
Retailer 7
-
$4,513 USD
View
B
Retailer 8
-
$4,650 USD
View
B
Retailer 9
-
$4,805 USD
View
B
Retailer 10
-
$5,062 USD
View
B
Retailer 11
-
$5,113 USD
View
Retailer 12
-
$5,113 USD
View
Price last confirmed 8 days ago
B
Retailer 13
-
$5,113 USD
View
Retailer 14
-
$5,289 USD
View
Price last confirmed 22 days ago
B
Retailer 15
-
$5,304 USD
View
B
Retailer 16
-
$5,504 USD
View
B
Retailer 17
-
$5,505 USD
View
B
Retailer 18
-
$5,660 USD
View
B
Retailer 19
-
$5,660 USD
View
Retailer 20
-
$5,673 USD
View
Price last confirmed 19 days ago
B
Retailer 21
-
$5,791 USD
View
B
Retailer 22
-
$5,850 USD
View
B
Retailer 23
-
$5,899 USD
View
B
Retailer 24
-
$6,024 USD
View
B
Retailer 25
-
$6,937 USD
View
Retailer 26
-
$8,173 USD
View
Price last confirmed 10 days ago
B
Retailer 27
-
$8,989 USD
View
Most Expensive
NZ Jewellers
89af7956-ae5e-4b27-b12a-bb96dfb8765d · Oct 30
$9,439 USD
View
Price last confirmed 7 days ago
27 more retailers have this diamond
Prices start from $4,209 USDSave up to $4,780 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
$4,209 USD