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Marquise|Natural|GIA

1.00ct L SI1 Marquise Natural Diamond

EX • L/SI1 • GIA 1559603918

Certificate GIA 1559603918

Diamond specifications and retailer prices

From $1,699 USD
As of November 5, 2026
Save $321 USD (16%) vs most expensive(unlock to see where)
3 retailers carry this diamond
Most expensive: $2,020 USD at GemTrove · As of November 6, 2026
View at GemTrove

About this 1ct natural marquise diamond

This 1ct natural marquise sits in the classic one-carat band, graded L colour (faint-tinted) and SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 1559603918. Listed at 3 retailers as of November 5, 2026, with prices from $1,699 to $2,020, a $321 spread on the same certified stone. GemTrove lists it at $2,020. 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

1.00
Carat
L
Color
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 1559603918
Dimensions10.05 × 5.17 × 3.28 mm
L/W Ratio1.94
Culet sizeNone
Key to symbols
Twinning Wisp, Feather
Top View
10.05 mm5.17 mm1.00 ctL / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 1559603918
Side View
Table 56.0%CrownGirdle: THK-VTKPavilionCulet: NoneDepth 63.4%

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 5
Current: $2,020 USD|Low: $1,699 USD|High: $2,020 USD|Avg: $1,862 USD
GemTrove
Retailer 2
Retailer 3
November 6, 2026
Retailer 3$1,699 USD
Retailer 2$1,837 USD
GemTrove$2,020 USD

39 data points across 3 retailers

3 retailers$1,699 USD to $2,020 USD

B+
Cheapest Retailer
-
$1,699 USD
B
Retailer 2
-
$1,837 USD
View
Most Expensive
B
GemTrove
GT-N-01273368-98 · Nov 6
$2,020 USD
A$3,108 AUD
View
2 more retailers have this diamond
Prices start from $1,699 USDSave up to $321 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
$1,699 USD