Marquise|Natural|GIA

1.00ct G SI1 Marquise Natural Diamond

VG • G/SI1 • GIA 3555909668

Certificate GIA 3555909668

Diamond specifications and retailer prices

From $2,734 USD
As of October 31, 2026
Save $2,464 USD (47%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: $5,198 USD at Helzberg Diamonds · As of November 1, 2026
View at Helzberg Diamonds

About this 1ct natural marquise diamond

This 1ct natural marquise sits in the classic one-carat band, graded G 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 3555909668. Listed at 15 retailers as of October 31, 2026, with prices from $2,734 to $5,198, a $2,464 spread on the same certified stone. Helzberg Diamonds lists it at $5,198. 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

1.00
Carat
G
Color
SI1
Clarity
Very Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Very Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle40.66°
Pavilion angle38.05°
OriginNatural
Grading LabGIA
CertificateGIA 3555909668
Dimensions9.65 × 5.19 × 3.17 mm
L/W Ratio1.86
Culet sizeNone
Top View
9.65 mm5.19 mm1.00 ctG / SI1
OriginNatural
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 3555909668
Side View
Table 59.0%Crown 40.66°Girdle: STK-VTKPavilion 38.05°Culet: NoneDepth 61.1%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 31
Current: $5,198 USD|Low: $2,734 USD|High: $5,398 USD|Avg: $3,589 USD|-3.7%
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
Retailer 15
November 2, 2026
Retailer 10$2,734 USD
Retailer 15$2,785 USD
Retailer 7$2,908 USD
Retailer 11$2,947 USD
Retailer 12$2,956 USD
Retailer 8$3,197 USD
Retailer 5$3,293 USD
Retailer 3$3,517 USD
Retailer 13$3,520 USD
Retailer 4$3,604 USD
Retailer 2$3,651 USD
Retailer 9$3,792 USD
Retailer 14$4,610 USD
Retailer 6$4,909 USD
Helzberg Diamonds$5,198 USD

34 data points across 15 retailers

15 retailers$2,734 USD to $5,198 USD

A
Cheapest Retailer
-
$2,734 USD
A
Retailer 2
-
$2,785 USD
SGD 3,763 SGD
View
B+
Retailer 3
-
$2,908 USD
View
B+
Retailer 4
-
$2,947 USD
View
A
Retailer 5
-
$2,956 USD
View
B+
Retailer 6
-
$3,197 USD
£2,517 GBP
View
B+
Retailer 7
-
$3,293 USD
SGD 4,450 SGD
View
B+
Retailer 8
-
$3,517 USD
View
B+
Retailer 9
-
$3,520 USD
View
B+
Retailer 10
-
$3,604 USD
View
B+
Retailer 11
-
$3,651 USD
€3,477 EUR
View
B+
Retailer 12
-
$3,792 USD
View
B
Retailer 13
-
$4,610 USD
View
B
Retailer 14
-
$4,909 USD
View
Most Expensive
B
Helzberg Diamonds
XZRJLLLPGPMMO · Nov 1
$5,198 USD
View
14 more retailers have this diamond
Prices start from $2,734 USDSave up to $2,464 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.

A
1.00ct Marquise
$2,734 USD