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Marquise|Natural|GIA

1.00ct D SI1 Marquise Natural Diamond

EX • D/SI1 • GIA 2566126580

Certificate GIA 2566126580

Diamond specifications and retailer prices

From $2,803 USD
HK$21,900 HKD
As of November 1, 2026
Save $3,420 USD (55%) vs most expensive(unlock to see where)
21 retailers carry this diamond
Most expensive: $6,483 USD at NZ Jewellers · As of October 17, 2026
View at NZ Jewellers

About this 1ct natural marquise diamond

This 1ct natural marquise sits in the classic one-carat band, graded D colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 2566126580. Listed at 21 retailers as of November 1, 2026, with a 122% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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
D
Color
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryVery Good
FluorescenceFaint
OriginNatural
Grading LabGIA
CertificateGIA 2566126580
Dimensions9.69 × 5.23 × 3.22 mm
L/W Ratio1.85
Girdle conditionFaceted
Culet sizeNone
Key to symbols
Twinning Wisp, Feather, Knot, Crystal, Indented Natural, Natural
Top View
9.69 mm5.23 mm1.00 ctD / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceFaint
CertificateGIA 2566126580
Side View
Table 60.0%CrownGirdle: THN-VTKPavilionCulet: NoneDepth 61.6%

Caratlytics Score

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

Price History

Last verified: Nov 1
Current: $6,483 USD|Low: $2,778 USD|High: $6,483 USD|Avg: $4,090 USD
NZ Jewellers
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
Retailer 16
Retailer 17
November 1, 2026
Retailer 13$2,803 USD
Retailer 2$2,936 USD
Retailer 3$3,271 USD
Retailer 17$3,335 USD
Retailer 16$3,385 USD
Retailer 6$3,434 USD
Retailer 8$3,538 USD
Retailer 4$3,721 USD
Retailer 7$3,867 USD
Retailer 11$3,889 USD
Retailer 9$4,004 USD
Retailer 5$4,294 USD
Retailer 14$4,358 USD
Retailer 12$4,574 USD
Retailer 15$5,747 USD
Retailer 10$6,223 USD
NZ Jewellers$6,483 USD

30 data points across 17 retailers

21 retailers$2,803 USD to $6,223 USD

A
Cheapest Retailer
-
$2,803 USD
HK$21,900 HKD
A
Retailer 2
-
$2,936 USD
₹279,662 INR
View
A
Retailer 3
-
$3,271 USD
SGD 4,420 SGD
View
A
Retailer 4
-
$3,335 USD
View
A
Retailer 5
-
$3,385 USD
View
B+
Retailer 6
-
$3,431 USD
View
B+
Retailer 7
-
$3,434 USD
View
Final sale: no returns
B+
Retailer 8
-
$3,435 USD
View
B+
Retailer 9
-
$3,538 USD
SGD 4,781 SGD
View
Retailer 10
-
$3,721 USD
View
Price last confirmed 14 days ago
Retailer 11
-
$3,721 USD
View
Price last confirmed 16 days ago
Retailer 12
-
$3,864 USD
View
Price last confirmed 16 days ago
B+
Retailer 13
-
$3,867 USD
View
B+
Retailer 14
-
$3,889 USD
£3,062 GBP
View
Retailer 15
-
$4,004 USD
A$6,160 AUD
View
Price last confirmed 24 days ago
Retailer 16
-
$4,294 USD
View
Price last confirmed 14 days ago
B+
Retailer 17
-
$4,358 USD
€4,150 EUR
View
B+
Retailer 18
-
$4,574 USD
ZAR 73,892 ZAR
View
B
Retailer 19
-
$5,747 USD
£4,525 GBP
View
B
Retailer 20
-
$6,223 USD
£4,900 GBP
View
Most Expensive
NZ Jewellers
29855469-973e-45d7-8135-5312df9dd88e · Oct 17
$6,483 USD
View
Price last confirmed 15 days ago
20 more retailers have this diamond
Prices start from $2,803 USDSave up to $3,420 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
$2,803 USD