CaratHunter
Plans
Marquise|Natural|GIA

1.00ct D SI1 Marquise Natural Diamond

EX • D/SI1 • GIA 2566126580

Certificate GIA 2566126580

Diamond specifications and retailer prices

From €2,509 EUR
HK$21,900 HKD
As of November 1, 2026
Save €3,061 EUR (55%) vs most expensive(unlock to see where)
21 retailers carry this diamond
Most expensive: €5,803 EUR 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: €5,803 EUR|Low: €2,486 EUR|High: €5,803 EUR|Avg: €3,665 EUR
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 2, 2026
Retailer 14€2,509 EUR
Retailer 11€2,628 EUR
Retailer 3€2,928 EUR
Retailer 17€2,985 EUR
Retailer 16€3,030 EUR
Retailer 6€3,074 EUR
Retailer 8€3,167 EUR
Retailer 4€3,331 EUR
Retailer 10€3,452 EUR
Retailer 7€3,461 EUR
Retailer 9€3,584 EUR
Retailer 5€3,844 EUR
Retailer 2€3,898 EUR
Retailer 13€4,094 EUR
Retailer 15€5,144 EUR
Retailer 12€5,570 EUR
NZ Jewellers€5,803 EUR

31 data points across 17 retailers

21 retailers€2,509 EUR to €5,570 EUR

A
Cheapest Retailer
-
€2,509 EUR
HK$21,900 HKD
A
Retailer 2
-
€2,628 EUR
₹279,662 INR
View
A
Retailer 3
-
€2,928 EUR
SGD 4,420 SGD
View
A
Retailer 4
-
€2,985 EUR
$3,335 USD
View
A
Retailer 5
-
€3,030 EUR
$3,385 USD
View
B+
Retailer 6
-
€3,071 EUR
$3,431 USD
View
B+
Retailer 7
-
€3,074 EUR
$3,434 USD
View
Final sale: no returns
B+
Retailer 8
-
€3,075 EUR
$3,435 USD
View
B+
Retailer 9
-
€3,167 EUR
SGD 4,781 SGD
View
Retailer 10
-
€3,331 EUR
$3,721 USD
View
Price last confirmed 14 days ago
Retailer 11
-
€3,331 EUR
$3,721 USD
View
Price last confirmed 17 days ago
B+
Retailer 12
-
€3,452 EUR
£3,037 GBP
View
Retailer 13
-
€3,459 EUR
$3,864 USD
View
Price last confirmed 16 days ago
B+
Retailer 14
-
€3,461 EUR
$3,867 USD
View
Retailer 15
-
€3,584 EUR
A$6,160 AUD
View
Price last confirmed 24 days ago
Retailer 16
-
€3,844 EUR
$4,294 USD
View
Price last confirmed 14 days ago
B+
Retailer 17
-
€3,898 EUR
View
B+
Retailer 18
-
€4,094 EUR
ZAR 73,892 ZAR
View
B
Retailer 19
-
€5,144 EUR
£4,525 GBP
View
B
Retailer 20
-
€5,570 EUR
£4,900 GBP
View
Most Expensive
NZ Jewellers
29855469-973e-45d7-8135-5312df9dd88e · Oct 17
€5,803 EUR
$6,483 USD
View
Price last confirmed 15 days ago
20 more retailers have this diamond
Prices start from €2,509 EURSave up to €3,061 EUR

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
€2,509 EUR