Marquise|Natural|GIA

1.20ct I SI1 Marquise Natural Diamond

VG • I/SI1 • GIA 1563074038

Certificate GIA 1563074038

Diamond specifications and retailer prices

From $3,669 USD
As of November 4, 2026
Save $2,906 USD (44%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: $6,575 USD at Helzberg Diamonds · As of November 6, 2026
View at Helzberg Diamonds

About this 1.2ct natural marquise diamond

This 1.2ct natural marquise sits in the classic one-carat band, graded I 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 1563074038. Listed at 14 retailers as of November 4, 2026, with prices from $3,669 to $6,575, a $2,906 spread on the same certified stone. Helzberg Diamonds lists it at $6,575. 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
I
Color
SI1
Clarity
Very Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Very Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle39.82°
Pavilion angle41°
OriginNatural
Grading LabGIA
CertificateGIA 1563074038
Dimensions10.56 × 5.39 × 3.53 mm
L/W Ratio1.96
Culet sizeNone
Top View
10.56 mm5.39 mm1.20 ctI / SI1
OriginNatural
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 1563074038
Side View
Table 58.0%Crown 39.82°Girdle: STK-VTKPavilion 41°Culet: NoneDepth 65.6%

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 4
Current: $6,575 USD|Low: $3,669 USD|High: $6,987 USD|Avg: $4,806 USD|-5.9%
Helzberg Diamonds
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 11$3,669 USD
Retailer 13$3,727 USD
Retailer 10$3,835 USD
Retailer 6$3,843 USD
Retailer 9$3,921 USD
Retailer 5$4,004 USD
Retailer 8$4,208 USD
Retailer 3$4,648 USD
Retailer 4$4,683 USD
Retailer 7$4,716 USD
Retailer 2$5,090 USD
Retailer 12$6,188 USD
Retailer 14$6,532 USD
Helzberg Diamonds$6,575 USD

25 data points across 14 retailers

14 retailers$3,669 USD to $6,575 USD

B+
Cheapest Retailer
-
$3,669 USD
B+
Retailer 2
-
$3,727 USD
View
B+
Retailer 3
-
$3,835 USD
View
B+
Retailer 4
-
$3,843 USD
View
B+
Retailer 5
-
$3,921 USD
View
B+
Retailer 6
-
$4,004 USD
View
B
Retailer 7
-
$4,208 USD
View
B
Retailer 8
-
$4,648 USD
View
B
Retailer 9
-
$4,683 USD
View
B
Retailer 10
-
$4,716 USD
View
B
Retailer 11
-
$5,090 USD
View
B
Retailer 12
-
$6,188 USD
View
B
Retailer 13
-
$6,532 USD
View
Most Expensive
B
Helzberg Diamonds
XZRHLMJGNKGJO · Nov 6
$6,575 USD
View
13 more retailers have this diamond
Prices start from $3,669 USDSave up to $2,906 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
$3,669 USD