Marquise|Natural|GIA

1.20ct H SI1 Marquise Natural Diamond

ID • H/SI1 • GIA 1553732833

Certificate GIA 1553732833

Diamond specifications and retailer prices

From $3,382 USD
As of November 2, 2026
Save $2,660 USD (44%) vs most expensive(unlock to see where)
8 retailers carry this diamond
Most expensive: $6,042 USD at NZ Jewellers · As of November 3, 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 top-tier cut grade stated by the retailer rather than the lab and certified by GIA 1553732833. Listed at 8 retailers as of November 2, 2026, with prices from $3,382 to $6,042, a $2,660 spread on the same certified stone. NZ Jewellers lists it at $6,042. 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
H
Color
SI1
Clarity
Ideal
Cut (retailer stated)

Specifications

Cut (retailer stated)Ideal
PolishExcellent
SymmetryVery Good
FluorescenceStrong
Crown angle41.36°
Pavilion angle40.79°
OriginNatural
Grading LabGIA
CertificateGIA 1553732833
Dimensions9.68 × 5.44 × 3.73 mm
L/W Ratio1.78
Girdle conditionVery Thick
Key to symbols
Crystal, Feather, Needle
Top View
9.68 mm5.44 mm1.20 ctH / SI1
OriginNatural
CutIdeal
PolishExcellent
SymmetryVery Good
FluorescenceStrong
CertificateGIA 1553732833
Side View
Table 57.0%Crown 41.36°Girdle: THK-VTKPavilion 40.79°Culet: NoneDepth 68.5%

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 2
Current: $6,042 USD|Low: $3,340 USD|High: $6,465 USD|Avg: $4,368 USD|-6.5%
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
November 4, 2026
Retailer 3$3,382 USD
Retailer 7$3,468 USD
Retailer 2$3,560 USD
Retailer 5$3,560 USD
Retailer 6$3,601 USD
Retailer 8$3,907 USD
Retailer 4$5,800 USD
NZ Jewellers$6,042 USD

38 data points across 8 retailers

8 retailers$3,382 USD to $6,042 USD

B+
Cheapest Retailer
-
$3,382 USD
B+
Retailer 2
-
$3,468 USD
View
B+
Retailer 3
-
$3,560 USD
View
B+
Retailer 4
-
$3,560 USD
View
B+
Retailer 5
-
$3,601 USD
View
Retailer 6
-
$3,907 USD
View
Price last confirmed 29 days ago
B
Retailer 7
-
$5,800 USD
View
Most Expensive
B
NZ Jewellers
857e2cb2-a4b0-4b3a-9072-4c8fbd91870c · Nov 3
$6,042 USD
View
7 more retailers have this diamond
Prices start from $3,382 USDSave up to $2,660 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
$3,382 USD