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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 £2,092 GBP
HK$21,900 HKD
As of November 1, 2026
Save £2,552 GBP (55%) vs most expensive(unlock to see where)
21 retailers carry this diamond
Most expensive: £4,838 GBP 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
Colour
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: £4,838 GBP|Low: £2,073 GBP|High: £4,838 GBP|Avg: £3,056 GBP
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£2,092 GBP
Retailer 11£2,192 GBP
Retailer 3£2,441 GBP
Retailer 17£2,489 GBP
Retailer 16£2,526 GBP
Retailer 6£2,563 GBP
Retailer 8£2,640 GBP
Retailer 4£2,777 GBP
Retailer 10£2,878 GBP
Retailer 7£2,886 GBP
Retailer 9£2,988 GBP
Retailer 5£3,205 GBP
Retailer 2£3,251 GBP
Retailer 13£3,414 GBP
Retailer 15£4,289 GBP
Retailer 12£4,644 GBP
NZ Jewellers£4,838 GBP

31 data points across 17 retailers

21 retailers£2,092 GBP to £4,644 GBP

A
Cheapest Retailer
-
£2,092 GBP
HK$21,900 HKD
A
Retailer 2
-
£2,192 GBP
₹279,662 INR
View
A
Retailer 3
-
£2,441 GBP
SGD 4,420 SGD
View
A
Retailer 4
-
£2,489 GBP
$3,335 USD
View
A
Retailer 5
-
£2,526 GBP
$3,385 USD
View
B+
Retailer 6
-
£2,561 GBP
$3,431 USD
View
B+
Retailer 7
-
£2,563 GBP
$3,434 USD
View
Final sale: no returns
B+
Retailer 8
-
£2,564 GBP
$3,435 USD
View
B+
Retailer 9
-
£2,640 GBP
SGD 4,781 SGD
View
Retailer 10
-
£2,777 GBP
$3,721 USD
View
Price last confirmed 15 days ago
Retailer 11
-
£2,777 GBP
$3,721 USD
View
Price last confirmed 17 days ago
B+
Retailer 12
-
£2,878 GBP
View
Retailer 13
-
£2,884 GBP
$3,864 USD
View
Price last confirmed 16 days ago
B+
Retailer 14
-
£2,886 GBP
$3,867 USD
View
Retailer 15
-
£2,988 GBP
A$6,160 AUD
View
Price last confirmed 24 days ago
Retailer 16
-
£3,205 GBP
$4,294 USD
View
Price last confirmed 14 days ago
B+
Retailer 17
-
£3,251 GBP
€4,148 EUR
View
B+
Retailer 18
-
£3,414 GBP
ZAR 73,892 ZAR
View
B
Retailer 19
-
£4,289 GBP
View
B
Retailer 20
-
£4,644 GBP
View
Most Expensive
NZ Jewellers
29855469-973e-45d7-8135-5312df9dd88e · Oct 17
£4,838 GBP
$6,483 USD
View
Price last confirmed 15 days ago
20 more retailers have this diamond
Prices start from £2,092 GBPSave up to £2,552 GBP

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
£2,092 GBP