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Marquise|Natural|GIA

1.00ct K SI1 Marquise Natural Diamond

GD • K/SI1 • GIA 2556808009

Certificate GIA 2556808009

Diamond specifications and retailer prices

From $1,331 USD
As of November 6, 2026
Save $1,186 USD (47%) vs most expensive(unlock to see where)
7 retailers carry this diamond
Most expensive: $2,517 USD at With Clarity · As of November 6, 2026
View at With Clarity

About this 1ct natural marquise diamond

This 1ct natural marquise sits in the classic one-carat band, graded K colour (faint-tinted) and SI1 clarity (slightly-included), with a standard cut grade stated by the retailer rather than the lab and certified by GIA 2556808009. Listed at 7 retailers as of November 6, 2026, with prices from $1,331 to $2,517, a $1,186 spread on the same certified stone. With Clarity lists it at $2,517. 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
K
Color
SI1
Clarity
Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Good
PolishExcellent
SymmetryVery Good
FluorescenceFaint
OriginNatural
Grading LabGIA
CertificateGIA 2556808009
Dimensions9.82 × 5.15 × 3.32 mm
L/W Ratio1.91
Girdle conditionFaceted
Culet sizeNone
Key to symbols
Feather, Twinning Wisp
Top View
9.82 mm5.15 mm1.00 ctK / SI1
OriginNatural
CutGood
PolishExcellent
SymmetryVery Good
FluorescenceFaint
CertificateGIA 2556808009
Side View
Table 59.0%CrownGirdle: Extremely ThickPavilionCulet: NoneDepth 64.5%

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 6
Current: $1,807 USD|Low: $1,331 USD|High: $2,491 USD|Avg: $1,788 USD|-2.2%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
With Clarity
November 6, 2026
Retailer 4$1,331 USD
Retailer 3$1,473 USD
Retailer 6$1,634 USD
Retailer 1$1,807 USD
Retailer 5$1,820 USD
Retailer 2$1,844 USD
With Clarity$2,491 USD

14 data points across 7 retailers

7 retailers$1,331 USD to $2,517 USD

B+
Cheapest Retailer
-
$1,331 USD
B+
Retailer 2
-
$1,473 USD
View
B+
Retailer 3
-
$1,634 USD
View
B+
Retailer 4
-
$1,807 USD
View
B+
Retailer 5
-
$1,820 USD
View
B+
Retailer 6
-
$1,844 USD
View
Most Expensive
B
With Clarity
2556808009 · Nov 6
$2,517 USD
View
6 more retailers have this diamond
Prices start from $1,331 USDSave up to $1,186 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+
1.00ct Marquise
$1,331 USD